A stationary 0.12 kg hockey puck is hit with a force that lasts for 0.01 seconds and makes the puck move at 20 m/s. With what force was the puck hit?
A.
24 N
B.
-240 N
C.
-24 N
D.
240 N
8. A 1000 kg Civic is traveling at 30 m/s and hits a lamp post. What is the momentum of the car while moving?
A.
30,000 kg.m/s
B.
3,000 kg.m/s
C.
300,000 kg.m/s
D.
300 kg.m/s
9. Wall exerts a force of 10,000 N on the van. The contact time is 0.01 s. What is the impulse?
A.
10 N-s
B.
100 N-s
C.
1,000 N-s
D.
-100 N-s
10. What is the momentum of a 900 kg Toyota traveling at 30 m/s?
A.
270,000 kg.m/s
B.
2,700 kg.m/s
C.
27,000 kg.m/s
D.
270 kg.m/s
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Answer:
7. C. -24 N
8. A. 30,000 kg.m/s
9. B. 100 N-s
10. C. 27,000 kg.m/s
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Explanation:
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