15114072
Descripción
Test por Jeffrey Piggott, actualizado hace más de 1 año
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Creado por Jeffrey Piggott
hace más de 6 años
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Pregunta 1
Pregunta
The position-versus-time graph below shows Object A (solid line) and Object B (dashed line) moving along the same axis and colliding.
Do they undergo a totally inelastic collision? Remember, the objects in a totally inelastic collision must stick together, and the momentum of the system must be the same before and after the collision.
Check ONE answer.
Image:
Q1 (binary/octet-stream)
Respuesta
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Yes
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No
Pregunta 2
Pregunta
The velocity-versus-time graph below shows another collision between Object A (solid line) and Object B (dashed line).
Does the graph represent a totally inelastic collision?
Image:
Q2 (binary/octet-stream)
Respuesta
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Yes
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No
Pregunta 3
Pregunta
A cannon sits at rest on a horizontal and frictionless surface. A cannonball is fired horizontally from the cannon.
The speed of the cannonball will be the same as the speed of the recoiling cannon:
Respuesta
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because momentum is conserved.
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because velocity is conserved
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because both velocity and momentum are conserved.
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if the mass of the cannonball equals the mass of the cannon. correct
Pregunta 4
Pregunta
A 0.5 kg piece of clay moving at 2 m/s collides and sticks to a 5.5 kg bowling ball that is initially at rest. After the clay sticks to the ball, what is the momentum of the system? Assume a closed system of the ball plus the clay.
Respuesta
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0.09 kg.m.s^-1
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1 kg.m.s^-1
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11 kg.m.s^-1
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12 kg.m.s^-1
Pregunta 5
Pregunta
Two identical carts are traveling toward each other at the same speed. The carts collide, stick together, and stop immediately after the collision. Which of the following is a true statement about the final momentum of the system?
Respuesta
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The final momentum is zero because the momentum dissipated as heat during the collision.
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The final momentum is zero because prior to the collision each cart had the same magnitude, but opposite directions of momentum.
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The final momentum is zero because the forces acting on the carts cancelled each other out.
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The final momentum is zero because momentum disappears during an inelastic collision.
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