Review

1. A push or pull is what?

2. Force exerted by every object in universe on every other object?

a. forceb. gravityc. speedd. acceleration

3. Force that opposes motion between surfaces

a. forceb. gravityc. frictiond. acceleration

4. Whitney walks 40 m in 2 sec. What is her speed?

a. 40 m/sb. 80 m/sc. 10 m/sd. 20 m/s

5. Units for mass are?

a. m/sb. m/s2

c. Nd. kg

6. What is a way that friction is helpful in your life?

Be specific!!!

7. If Pumpkin has a mass of 5 kg on the moon, what will his mass be on earth?

a. less than 5 kgb. 5 kgc. more than 5 kgd. nothing

8. Usually, what has lower friction?

A. rolling kineticB. sliding kinetic

9. Gravitational force on an objecta. massb. weight

10. Which is a force?a. inertiab. gravityc. speedd. acceleration

11. Acceleration includes

a. Speeding upb. Slowing downc. changing directiond. all of the above

12. If Pumpkin weighs 90 N on the moon, what will he weigh on earth?

a. less than 90 Nb. 90 Nc. more than 90 Nd. nothing

13. If mass of the earth increased, Gravitational forces would

a. increaseb. decreasec. not change

14. If distance from the earth increased, Gravitational forces would

a. increaseb. decreasec. not change

15. Units for acceleration are?

a. m/sb. m/s2

c. Nd. kg

16. Amount of matter in an objecta. massb. weight

17. What is a way to reduce friction in your life?

Be specific!!!

18. This graph shows

a. car with negative accelerationb. Car with positive accelerationc. Car with constant speedd. car not moving

19. What are the units for weight?

a. m/sb. m/s2

c. Nd. kg

20. Shannon runs to Trisha’s house at 4 m/s. In 2 seconds she comes to a complete stop (0m/s). What is her acceleration? Remember to have negative

number if deceleration.

V f – V s

Time

21. This ball is not moving because the

forces acting on it are equal but opposite in

direction…they are said to be?

a. net forcedb. neutral

c. balancedd. unbalanced