1. Impulse and Momentum Quiz
Linear Impulse and Momentum
Angular Impulse and Momentum
Conservation of Momentum

2. 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/s2

3. a) 4.36 m/s b) 53.5 m/s c) 30.6 m/s d) 5.45 m/s
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

4. 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

5. a) 4000 kg.m/s b) 3920 kg.m/s c) 500 kg.m/s d) 408 kg.m/s
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

6. 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) rad/s

7. a) 125.0 m/s b) 100.0 m/s c) 126.3 m/s d) 115.0 m/s
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) m/s
b) m/s
c) m/s
d) m/s

8. 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)