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Quiz Review Name __________________________________ 1. You are running at 3.5 m/s. How many seconds will it take to cover a distance of 90 meters? (show set- up and answer) 2. What should the line look like on a speed graph that would tell you that the speed is constant? ___________________________________ 3. You are on a bus that is moving north at a velocity of 10 km/hr and you are walking from the rear toward the front of the bus at a velocity of 2 km/hr. What is the resultant velocity? (show set-up and answer) 4. Acceleration is the rate at which _______________________ changes. 5. A car accelerates from 25 km/hr to 70 km/hr in 15 seconds. What is the car’s acceleration? (show set-up and answer) 6. A bowling ball is thrown at a speed of 17 m/s and hits the pins after 5 seconds at a speed of 12 m/s. What is the acceleration of the bowling ball? (show set-up and answer) 7. Acceleration can be: a. positive. b. constant. c. negative. d. all of the above. 8. On a graph about velocity, the independent variable is ______________________________ and the dependent variable is ______________________________. 9. Force is measured in ____________________________. 10. If there is an unbalanced force, something will________________________. In this case, net force is (choose one: equal to 0 N / less than 0 N / greater than 0 N ). 11. Name an example of a lubricant. ___________________________________________ 12. If you go to the moon, your _________________ changes, but not your ______________________. 13. Friction opposes _____________________ between surfaces that touch. 14. It would be important to know the ( speed / velocity ) of a hurricane.
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