1. Momentum & Impulse
For clickers

2. Which statement(s) describe momentum? (choose all that apply)
the “umph” that keeps an object moving
“inertia in motion”
impulse
depends on mass and velocity
measured in Joules
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3. Impulse can be described as…
momentum
A force acting over a time interval
A force acting over a distance
work
None of these
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4. The metric unit of momentum is
Newton
Watt
Joule
Newton-second
Kg m/s
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5. The metric unit of impulse is
Newton
Watt
Joule
Newton-second
Kg m/s
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6. Which of the following is true for a golf club hitting a golf ball
Which of the following is true for a golf club hitting a golf ball? (choose all that apply)
The impulse is the same for the club and the ball.
The force on the ball is greater than the force on the club.
The change in momentum of the ball is equal to the change in momentum of the club.
The ball and the club have the same change in velocity.
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7. In a perfectly inelastic collision, (choose all that apply)
momentum is conserved.
kinetic energy is conserved.
the objects stick together.
the objects bounce off each other.
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8. In a perfectly elastic collision, (choose all that apply)
momentum is conserved.
kinetic energy is conserved.
the objects stick together.
the objects bounce off each other.
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9. A 5 kg bowling ball is given a momentum of 15 kgm/s
A 5 kg bowling ball is given a momentum of 15 kgm/s. What is its velocity?
0 m/s
3 m/s
5 m/s
15 m/s
75 m/s
None of these
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10. A 5 kg bowling ball is given a momentum of 15 kgm/s
A 5 kg bowling ball is given a momentum of kgm/s. If it started from rest, how much impulse was applied to the bowling ball?
0 Ns
3 Ns
5 Ns
15 Ns
75 Ns
None of these
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11. If car A is 500 kg traveling at 5 m/s hits car B, 250 kg moving in the opposite direction at 2 m/s, what is the total momentum of the system before collision?
500 kgm/s
2000 kgm/s
2500 kgm/s
3000 kgm/s
None of these
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12. If car A is 500 kg traveling at 5 m/s hits car B, 250 kg moving in the opposite direction at 2 m/s, assuming the cars stick together upon collision, how fast will they be going?
0 m/s
2.0 m/s
2.7 m/s
4.0 m/s
8.0 m/s
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13. 500 kgm/s in the direction of the cannonball
A 100 kg cannonball is fired from a 1000 kg cannon at a speed of 5 m/s. How much momentum does the cannon have after firing?
0 kgm/s
500 kgm/s in the direction of the cannonball
500 kgm/s opposite direction of the cannonball
5000 kgm/s in the direction of the cannonball
5000 kgm/s opposite direction of the cannonball.
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14. 0.5 m/s in the direction of the cannonball
A 100 kg cannonball is fired from a 1000 kg cannon at a speed of 5 m/s. What is the recoil velocity of the cannon?
0 m/s
0.5 m/s in the direction of the cannonball
0.5 m/s opposite direction of the cannonball
2 m/s in the direction of the cannonball
2 m/s opposite direction of the cannonball.
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15. 1.68 m/s 1.94 m/s 10.25 m/s 33.33 m/s None of these
A 20 kg bumper car moving to the right at 5.00 m/s overtakes and collides with a 35 kg bumper car also moving to the right. After the collision the 20 kg car slows to 1.4 m/s right and the 35 kg car moves at 4.0 m/s to the right. Find the velocity of the 35 kg car before the collision?
1.68 m/s
1.94 m/s
10.25 m/s
33.33 m/s
None of these
[Default]
[MC Any]
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