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18 Cards in this Set
- Front
- Back
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When a train increases in velocity its momentum
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increases
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A car with a mass of 1400 kg moves along the ice with a constant velocity of 18.0 m/s. What is the car's momentum?
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25,200 kg*m/s
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If an action force is a cue ball hitting a billiard ball, then the reaction force is
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exerted by the the billiard ball on the cue ball
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If a tennis ball, a solid rubber ball, and a solid steel ball were dropped at the same time from the same height, which would hit the ground first?
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All would hit at the same time.
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Which of the following objects has the least acceleration?
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a full shopping cart pushed with light force
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A crumpled piece of paper hits the ground before a flat sheet of paper because
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there is more air resistance against the flat paper
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According to Newton's first law of motion, a moving object that is not acted on by an unbalanced force will
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remain in motion
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Which of the following is not an action/reaction force pair?
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the force of propulsion and the force of gavity on an airplane
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To accelerate 2 objcts at the same rate, the force used to push the object that has more mass should be
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larger than the force used to push the object that has less mass
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A golf ball and a bowling ball are moving at the same velocity. Which of the wo has more momentum?
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The bowling ball has more momentum because it has more mass.
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If a baseball and a cannonball are dropped from the same height at the same time, and there is no air resistance, which ball will hit the ground first?
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The balls will land at the same time.
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Why do astronauts in space appear weightless?
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They are in free fall.
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The reaction force of a chair you are sitting on
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is equal to your weight.
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Which os the following is the equation for Newton's second law of motion?
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F=m x a
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The tendency of all objects is to resist any change in motion is
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inertia
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An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted upon by an unbalanced force is
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Newton's first law of motion
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All forces act in pairs is
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Newton's third law of motion
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The acceleration of an object depends on its mass and the amount of force applied is
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Newton's second law of motion.
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