A small rock bounces off the windshield of a moving car and experiences a large change in velocity. How does the car’s momentum change?(1 point)
It has a change in momentum equal to that of the rock, in the opposite direction.
It has a much smaller change in momentum than that of the rock, in the opposite direction.
It has a much smaller change in momentum than that of the rock, in the opposite direction.
It has a change in momentum greater than that of the rock, in the opposite direction.
It does not change.
Which of Newton’s laws of motion states that an object at rest stays at rest and an object in motion stays in motion with the same speed and the same direction unless acted upon by an unbalanced force?(1 point)
Newton’s third law of motion
Newton’s second law of motion
Newton’s fourth law of motion
Newton’s first law of motion
Which is always true in a closed system?(1 point)
Velocity is constant.
Acceleration is not constant.
Momentum is conserved.
Mass is not conserved.
Answers: 1
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A small rock bounces off the windshield of a moving car and experiences a large change in velocity....
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