Chapter 2: Describing Motion

Aristotle asserted that motion was characterized by

• natural motion.

• violent motion.

• both of these

• neither of these

Aristotle's view of natural laws is best understood by

• reasoning.

• experiment.

• mathematics.

• patterns.

A skydiver who falls at constant velocity is in a state of

• non–dynamic equilibrium.

• being in and out of dynamic equilibrium.

• dynamic equilibrium.

• none of the above

A heavy and a light ball are dropped at the same time from a high tower. The ball to reach the ground first, assuming no air resistance, will be the

• lighter ball.

• heavier ball.

• both together.

• none of the above

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When a 100-kg block is simultaneously pushed toward the east with 200 N and toward the west with 150 N, the combination of these forces on the block is

• 50 N west.

• 50 N east.

• 350 N west.

• 350 N east

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A block of matter will weigh

• less on the Earth.

• the same on both.

• less on the Moon.

• need more information

When the net force on an object equals zero, its acceleration

• is zero.

• and velocity are the same.

• may be zero.

• none of the above

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Science greatly moved forward when Galileo favored

• non–mathematical thinking.

• philosophical discussions.

• experiment.

• none of the above

Instantaneous velocity is

• a vector quantity.

• what a speedometer reads.

• the velocity at any instant.

• all the above

Friction is at play in

• many sports.

• earthquakes.

• meteors.

• all of the above

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