PHYSICS - Chapter 2

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The first scientist to be credited for postulating that Earth circled the Sun was

Copernicus

Aristotle's many contributions

[ all of the above ] - four elements - violent motion requires a sustained push or pull - all motion is either natural or violent

An object in mechanical equilibrium is an object

[ all of the above ] - having no changes in velocity - at rest - moving with constant velocity

If gravity between the Sun and Earth suddenly vanished, Earth would continue moving in

a straight line path

If your automobile runs out of fuel while driving, the engine stops. You don't come to an abrupt stop due to

intertia

Galileo taught us that if you roll a ball along a level surface it will

keep rolling if friction is absent

A hockey puck is set in motion across a frozen pond. If ice friction and air resistance are neglected, the force required to keep the puck sliding at constant velocity

none of the above

A hockey puck will finally come to rest because

of friction

Inertia is defined as a

property of matter

Galileo interpretation of motion emphasized

rates of time

Galileo's use of inclined planes allowed him to effectively

slow down the ball's change in speed

The first scientist to introduce the concept of inertia was

Galileo

If no external forces act on a moving object, it will

continue moving at the same speed

When you stand at rest on a pair of bathroom scales, the reading on each scale

equals your weight

Science later greatly advanced when Galileo favored

experiment over philosophical discussions


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