# physics final review by mrpretty

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```									                                             Science 1206
Review for Physics Final                                                  Worksheet #2

Note: Make sure you study your notes, terms and examples from class. This review sheet will only show
a sample of possible test questions.

1. Complete the following operations and give your answers in the correct number of significant
digits:
a. 36.92 + 12.1
b. 400 – 1.001
c. 0.0010 x 4.61
d. 3700 ÷ 29.3

2. Convert the following measurements:
a. 12 mm to m
b. 3.8 m to cm
c. 4.5 min to s
d. 18.9 m/s to km/h
e. 24 h to s

3. An athlete runs 95.0 m [W] and 81.0 m [E] to warm up. If this takes the athlete 4.40 min calculate
her
a. Distance
b. Displacement
c. Speed
d. Velocity

4. How long does it take a dog to run 25.0 m if he runs at 2.3 m/s?

5. How far does a car travel in 45 min if it is moving at 71 km/h?

6. The graph below shows the motion of 2 cars.
d (km)
90

80

70
Car A
60

50

40

30
Car B
20

10
t (h)
0.5    1      1.5    2      2.5    3       3.5   4
a. Calculate the velocity of each car.
b. How far will Car A and Car B travel in 2 h?
c. Construct a velocity versus time graph for each car.
7. On a sunny afternoon you leave your home and go for a walk. Your motion is depicted below on
the position-time graph. Assume positive is North.
d (m)
35

30
C                     D

25

20                     B

15
A
10

5
t (s)
1       2        3       4       5       6       7        8        9
a.   Find your velocity for each lettered segment.
b.   What is the total distance traveled?
d.   What is your displacement from home?

8. A bird flies south at 8.10 m/s for 13.0 s. After realizing that he forgot his suntan lotion he turns
around and flies 116 m north at 7.60 m/s. Find:
a. the total distance traveled
b. his speed
c. the resultant displacement
d. his velocity

9. A skier travels 1.80 m/s down a hill. 5.80 s late she is traveling 9.30 m/s. Calculate her
acceleration

10. A rabbit speeds up at a rate of 3.70 m/s2 to flee from a wolf. If he started at 1.0 m/s and reached
a velocity of 8.87 m/s, calculate the time.

11. A jogger running at 2.3 m/s [E] accelerates at 0.520 m/s2 [E] for 5.00 s. Find the final velocity of
the runner.

1. (a) 49.0        (b) 399           (c) 0.0046       (d) 130
2. (a) 0.12 m      (b) 380 cm        (c) 270 s        (d) 68.0 km/h (e) 8.6 x 104 s
3. (a) 176 m       (b) 14.0 m [W] (c) 0.667 m/s (d) 0.0530 m/s [W]
4. 11 s            5. 53 km
6. (a) velocity of car A = + 20.0 km/h; velocity of car B = + 15.0 km/h
(b) At 2 h, Car A = 50 km; Car B = 30 km
(c) For car A plot a horizontal line at 20.0 km/h for the entire 4.0 h. For car B, plot a
horizontal line at 15.0 km/h for the first 3 hours only (after that time it stops)
7. (a) 7.5 m/s [N]; 0 m/s; 10 m/s [N]; 8.3 m/s [S] (b) 60 m             (c) 6.7 m/s
(d) + 10 m      (e) + 1.1 m/s
8. (a) 221 m       (b) 7.82 m/s      (c) 10.7 m [N] (d) 0.379 m/s [N]
9. – 1.29 m/s2              10. 2.1 s         11. 4.9 m/s [E]

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