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Impulse and Momentum Quiz. Linear Impulse and Momentum Angular Impulse and Momentum Conservation of Momentum. 1. What are the correct SI units for an angular impulse?. a) N.s b) kg.m/s c) N.m.s d) kg.m/s 2.

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impulse and momentum quiz
Impulse and Momentum Quiz
  • Linear Impulse and Momentum
  • Angular Impulse and Momentum
  • Conservation of Momentum
slide3

2. If a 55.0 kg swimmer applies a horizontal impulse of 300 N.s to starting blocks, what is her starting velocity?

a) 4.36 m/s

b) 53.5 m/s

c) 30.6 m/s

d) 5.45 m/s

slide4

3. If a person is motionless and stops a positively spinning flywheel that has a vertical axle, the person will _______.

a) stay motionless

b) spin positively

c) spin negatively

d) become confused

slide5

4. What is the linear momentum of a runner who weighs 500 newtons and has a horizontal velocity of 8.00 m/s?

a) 4000 kg.m/s

b) 3920 kg.m/s

c) 500 kg.m/s

d) 408 kg.m/s

a 9 38 rad s b 24 0 rad s c 5 00 rad s d 1 600 rad s

5. If a figure skater takes off with an angular velocity of 5.0 rad/s and I=15 kg.m2 and then reduces her I to 8 kg.m2 what’s her final velocity?

a) 9.38 rad/s

b) 24.0 rad/s

c) 5.00 rad/s

d) 1.600 rad/s

slide7

6. A 100 gram arrow penetrates a 10-kg target and gives it a velocity of 1.25 m/s. How fast was the arrow before the impact?

a) 125.0 m/s

b) 100.0 m/s

c) 126.3 m/s

d) 115.0 m/s

correct answers
Correct answers
  • c (N.m.s or kg.m2/s)
  • d (=300/55)
  • b (spin positively)
  • d (=[500/9.81] x 8.0)
  • a (=[15 x 5] / 8)
  • c (= [1.25 x 10.1] / 0.1)