# motion_HW_packet_1_-111511

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```					Velocity and Motion HW packet

Lesson 3-1                                              Lesson3-2
Understanding Questions                                 Complete Lab Questions – Speed Lab

1.  How can you tell an object has moved?               Lesson3-3
2.  What is the difference between distance and
Understanding Questions
displacement?
3. If a car drove 2 miles from home to the store and
1.   What is the difference between velocity and
back home, determine the distance and the
speed?
displacement traveled.
2.   Give an example of a high velocity object. Low
4. What is the formula for average speed?
velocity object?
5. If a Porsche 911 travels 300 kilometers in 1.5
3.   If a car is travels 250 kilometers west in 2.5 hours,
hours, determine the average speed.
what is the car’s average velocity?
6. Is the speedometer on the car a measure of
4.   A Formula 1 car traveled 360 kilometers per hour
average speed or instantaneous speed?
south. What is the car’s velocity if it traveled 750
______
kilometers in 90 minutes?
5.   If a boat is travelling upstream with a velocity of
1.   Motion is                                               25 kph north, and there is a wind travelling 5 kph
a. the movement of an object compared to                south, what is the boat’s resultant velocity?
another object                                    ------
b. when you ride a roller coaster                       1.    Velocity is
c. when a car is parked                                      a. instantaneous speed and direction
d. when you throw up.                                        b. average speed
c. instantaneous speed
2.   Displacement differs from distance because it
d. Average speed and direction
measures:
2.   A race car going 200 mph and then slamming
a. how far an object travels
on its brakes is an example of
b. how fast an object travels
a. a high velocity object
c. how far from the start an object is
b. a low velocity object
d. how far from the end an object is
c. a negative velocity
3.   If a car drove 17 miles to the mall and back,
d. no velocity object
what is the total distance traveled?
3.   A sloth is an example of
a. 17 miles            c. 0 miles
a. a high velocity object
b. 34 miles            d. 25 miles
b. a low velocity object
4.   If a car drove 17 miles to the mall and back,
c. a negative velocity
what is the total displacement?
d. no velocity object
a. 17 miles            c. 0 miles
4.   If a car is travels 250 kilometers west in 2.5
b. 34 miles            d. 25 miles
hours, the car’s average velocity is
5.   Average speed is a measure of
a. .01 kph                     c. 2.5 kph
a. time / distance       c. distance / time
b. 25 kph                      d. 100 kph
b. speed / time          d. speed / distance
5.   A Formula 1 car traveled 360 kilometers per
6.   The average speed of a bike that traveled 10
hour south. What is the car’s velocity if it
kilometers in .5 hours is:
traveled 750 kilometers in 90 minutes?
a. ½ kph               c. .5 kph
a. 500kph                      c. 240 kph
b. 50 kph              d. 20 kph
b. 4 kph                       d. 8.3 kph
7.   If you read an instantaneous speed on the
6.   If a boat is travelling upstream with a velocity
speedometer of a car, you are reading:
of 25 kph north, & there is a wind travelling 5
a. the speed you are travelling at that second
kph south, what is the boat’s resultant
b. the average speed
velocity?
c. the time it will take you to reach the end
a. 30kph North                 c. 20 kph South
d. the speed you were travelling an hour ago
b. 25 kph North                d. 20 kph North
8.   A car has an average speed of 100 kph. It drove
7.   If a car is traveling on the NJ Turnpike at 75
for 3 hours. What is the distance traveled?
kphNorth, and travels for 5 hours, what is the
a. 300 K               c. 100 K
car’s total distance travelled?
b. 33 K                d. .3 K
a. 375 kilometers              c. 15 kilometers
b. 375 miles                   d. .07 kilometers
Velocity and Motion HW packet

Lesson3-4                                                   4.   Is the game mentioned above a balanced force?
Understanding Questions                                          WHY??
5.   Provide an example of a balanced force.
1.   Define acceleration.                                        ------------------
2.   Calculate acceleration of a sloth if she reaches the   1.   Force is
pond in 30 minutes and travels at 2.5 kilometers            a. push on an object c. push and pull
per hour.                                                   b. pull on an object d. hitting an object
3.   Determine if a braking car has positive or             2.   The formula for force is
negative acceleration.                                      a. mass / acceleration            c. mass*speed
4.   Determine if an airplane taking off has positive or         b. mass * acceleration            d. speed / time
negative acceleration.                                 3.   If a tug of war game broke out in science class,
5.   If a ball is rolling down a hill, explain why it has        and one side had a force of 300N and the other
positive acceleration.                                      had a force of 500 N, what would the net force
_________                                                   be?
1.    Acceleration is                                            a. 800 N                 c. 200 N
a. distance over time                                       b. -200 N                d. 1500 N
b. average speed                                       4.   An example of an unbalanced force would be a
c. change in velocity over change in time                   boxing match between
d. change in time over change in velocity                   a. Sean Gordon vs. a kitten
2.   All acceleration is increasing speed.                       b. a cheetah and a panther
a. True                 b. False                            c. Keith and Rachel Doherty
3.   What is the acceleration of a sloth if she reaches          d. Brendan and Colin Docherty
the pond in 30 minutes and travels at 2.5              5.   If a tug boat is pulling North with a force of 1000
kilometers per hour.                                        N and another tugboat is pulling North with a
a. 5 kph                c. -5 kph                           force of 500 N, the net force is
b. .08 kph              d. 60 kph                           a. 1500 N                c. ½ N
4.   A car begins to brake, going from 10 kph to 5               b. 500 N                 d. 0 N
kph. It takes the car 5 seconds to brake to this       6.   Which of the following is a balanced force?
speed. What is the car’s acceleration?                      a. 100 N vs -100 N                c. 500 N vs 500 N
a. 1kph                 c. 50 kph                           b. 500 N vs 1000 N                d. 100 N
b. -1 kph               d. – 50 kph                    7.   A book sitting on a table has two forces acting on
5.   An airplane taking off has                                  it. These forces are:
a. zero acceleration                                        a. balanced              c. opposite
b. negative acceleration                                    b. unbalanced            d. both a and c
c. positive acceleration
6.   A ball rolling down a hill has                         Lesson 3-6
a. low acceleration                                    Understanding Questions
b. negative acceleration
c. no acceleration                                     1.   Define air resistance.
d. positive acceleration                               2.   What is acceleration due to gravity?
7.   Riding a bike uphill has                               3.   Why does a flat piece of paper have more air
a. low acceleration                                         resistance than a crumpled piece of paper?
b. negative acceleration                               4.   What two factors influence terminal velocity?
c. no acceleration                                     5.   Which will reach its terminal velocity first, an
d. positive acceleration                                    elephant or a feather?
Lesson 3-5                                                  7.   In the absence of air, which will hit the ground
Understanding Questions                                          first, a feather or an elephant?? EXPLAIN
-------------
1.   Define force.                                          1.    Air resistance is
2.   What is the formula for force?                              a. opposing gravity
3.   If a tug of war game broke out in science class,            b. pushing up as an object falls
and one side had a force of 300N and the other              c. influenced by mass
had a force of 500 N, what would the net force              d. all of the above
be?
Velocity and Motion HW packet

2.   Which has more air resistance: a plastic grocery
bag or a brick?
a. grocery bag             c. They are both the same
b. brick             d. they don’t have air resistance
3.   In the absence of air resistance, what is the
acceleration due to gravity on Earth?
a. 1 m/s                  c. 10.5 m/s2
b. 9.8 m/s2               d. 9.8
4.   Terminal velocity is
a. the final velocity of a falling object
b. the initial velocity of a falling object
c. the final gravity of a falling object
d. initial – final velocity of an object
5.   Terminal velocity is reached when
a. force of weight = force of gravity
b. force of air resistance = weight
c. force of gravity = air resistance
d. mass = force of gravity
6.   Which will reach its terminal velocity first, an
elephant or a feather?
a. feather        c. they reach TV at the same time
b. elephant       d. they will never reach TV
7.   The more mass an object has
a. the faster it reaches terminal velocity
b. the longer it takes to reach terminal velocity
c. it will never reach terminal velocity
d. the less air resistance it needs to reach TV
8.   Why do objects on Earth fall at different rates, if
gravity is the same?
a. they don’t
b. a time continuum
c. air resistance differs
d. people throw things faster

Lesson 3-7
Study Guide

Lesson3-8
Exam
Velocity and Motion HW packet

Lesson 3-9                                                 8.     Static friction is created when
Complete Friction Lab Questions                                   a. objects move past one another
b. objects cannot move past one another
Lesson 3-10                                                       c. things have wheels
Understanding Questions                                           d. there is static on the tv
9.     Rolling friction is created when
1.     Why do objects stop on their own?                          a. objects move past one another
2.     What causes friction?
b. objects cannot move past one another
3.     Why would a refrigerator have more friction that
Colin?                                                     c. things have wheels
4.     Why won’t an object stop in space?                         d. there is static on the tv
5.     Why is oil used to lubricate a surface?
6.     What is the difference between static and sliding   Lesson 3-11
friction?                                           Understanding Questions
____
1. Define inertia.
1.   Friction is                                           2. Understand how inertia and mass are related.
3. Define Newton’s First Law of Motion.
a. the opposing of motion
4. Apply Newton’s First Law.
b. the movement of objects
c. what objects encounter on the moon
2.   What influences friction                              Lesson 3-12
a. gravity             c. gravity and mass            Understanding Questions
b. mass                d. air resistance
3.   When does sliding friction occur?
1.      Newton’s Second Law of Motion.
a. when an object is on wheels
2.      Understand how force and acceleration are
b. when an object overcomes static friction                   related.
c. when an object overcomes gravity                   3.      Understand how mass and acceleration are
d. when an object overcomes air resistance                    related.
4.   A refrigerator has more friction than Frank,          4.      Calculate net force.
because                                               5.      Apply Newton’s Second Law of Motion.
a. it has more gravity being applied
Lesson 3-13
b. it has more air resistance
Egg Drop
c. it has more mass
d. Frank has wheels on his shoes                      Lesson 3-14
5.   An object will continue to move in space because      Understanding Questions
a. there is no friction
b. there is a lot of friction                         1.      Determine how the gravitational force of an
c. no one will stop them                                      object changes based on mass.
2.      Describe gravitational force.
d. it is too cold
3.      Understand the difference between mass and
6.   Oil is a great lubricant because                              weight.
a. it causes microwelds                               4.      Understand Earth’s gravitational acceleration.
b. it causes friction                                 5.      Apply gravitational acceleration to real life
c. it fills in the microwelds                                 problems.
d. slows objects down
7.   Ice is difficult to drive on because                  Lesson 3-15
Understanding Questions
a. there is no friction between the tires and road
b. it makes it tough to see the road                       1. Understand how gravity affects weightlessness and
c. there is nothing for the tires to “grip”                   free fall.
d. both a and c                                            2. Define projectile motion.
3. Define both horizontal and vertical motion.
Velocity and Motion HW packet

4. Understand how acceleration and gravity affect a
projectile.

Lesson 3-16
Understanding Questions

1.   Determine how momentum is transferred from
one object to another.
2.   Define momentum.
3.   Understand the Law of Conservation of
Momentum.
4.   Define centripetal force.
5.   State Newton’s 3rd Law of Motion.
6.   Understand action and reaction pairs.

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