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Practice Questions



This activity contains 25 questions.

Question 1.
An Olympic diver dives off the high-diving platform. The magnitude of his momentum will be a maximum at Point


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Question 2.
Which of the following can best be described as an elastic collision?


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Question 3.
The Center of Mass of which of the following objects would not lie within the body itself?


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Question 4.
What is the magnitude of the impulse as shown in the following figure?


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Question 5.
If the impulse is applied to a particle at rest, what will be its final momentum?


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Question 6.
What is the impulse shown in the following figure?


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Question 7.

If the impulse is applied to a 200 gm model rocket at rest, what will be its final speed?


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Question 8.
What constant force acting over the same time as the force in Question 6 would produce the same impulse?


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Question 9.
If each mass in the figure is 1 kg, what is the x location of the center of mass?


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Question 10.

If each mass in the figure is 1 kg, what is the y location of the center of mass?


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Question 11.

If the mass of m1 and m3 in the figure is 1 kg and m2 is 2 kg, what is the x location of the center of mass?


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Question 12.

If the mass of m1 and m3 in the figure is 1 kg and m2 is 2 kg, what is the y location of the center of mass?


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Question 13.

If the mass of m1 is 1 kg and m3 is 2 kg in the figure and m2 is 3 kg, what is the x location of the center of mass?


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Question 14.

If the mass of m1 is 1 kg and m3 is 2 kg in the figure and m2 is 3 kg, what is the y location of the center of mass?


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Question 15.
If all the masses in the figure have a mass of 2 kg, and m2 has speed 2 m/s and m3 has a speed of 4 m/s, what is the x-component of the momentum of the center of mass?


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Question 16.

If all the masses in the figure have a mass of 2 kg, and m2 has speed 2 m/s and m3 has a speed of 4 m/s, what is the y-component of the momentum of the center of mass?


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Question 17.

What is the magnitude of the momentum of the center of mass of the system of particles in Question 15?


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Question 18.
What is the direction of the momentum of the center of mass of the particles in Question 15, as measured in degrees counter clockwise from East?

 
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Question 19.
A 12000 kg railroad car travelling at 10 m/s strikes and couples with a 6000 kg caboose at rest. What is the speed of the final combination?


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Question 20.
A 12000 kg railroad car travelling at 10 m/s strikes and couples with a 6000 kg caboose at rest. What is the loss of mechanical energy in the collision?


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Question 21.
A 12000 kg railroad car travelling at 10 m/s strikes and couples with a 6000 kg caboose at rest. What would be the speed of the combination of railroad cars if the caboose was initially rolling towards the other car with a speed of 2 m/s?


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Question 22.
A billiard ball travelling to the right at 6m/s overtakes and strikes an identical ball travelling at 3 m/s. What is the speed of the first ball after the collision?


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Question 23.
A billiard ball travelling to the right at 6m/s overtakes and strikes an identical ball travelling at 3 m/s. What is the speed of the second ball after the collision?


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Question 24.
A billiard ball travelling to the right at 6m/s overtakes and strikes an identical ball travelling at 3 m/s. What is the speed of the first ball after collision if the second ball was travelling at it (instead of away from it) with a speed of 3 m/s before collision?


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Question 25.
What is the speed of the second ball in Question 24 after collision?


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