chapter 1

The two measurements necessary for calculating average speed are acceleration and time. velocity and distance. distance and time. distance and acceleration. velocity and time.

distance and time.

The two measurements necessary for calculating average speed are distance and time. distance and acceleration. velocity and distance. acceleration and time. velocity and time.

distance and time.

A 1-kg mass at the Earth's surface weighs about 5 N. 1 N. none of these 12 N. 10 N.

10 N.

A 1-kg mass at the Earth's surface weighs about 5 N. none of these 1 N. 12 N. 10 N.

10 N.

The force of friction on a sliding object is 10 N. The applied force needed to maintain a constant velocity is 10 N. more than 10 N. less than 10 N.

10 N.

The gain in speed each second for a freely falling object is about 10 m/s. 0. depends on the initial speed 5 m/s. 20 m/s.

10 m/s.

A 300-kg bear grasping a vertical tree slides down at constant velocity. The friction force between the tree and the bear is more than 3000 N. 300 N. 3000 N. 30 N.

3000 N.

A man weighing 800 N stands at rest on two bathroom scales so that his weight is distributed evenly over both scales. The reading on each scale is 200 N. 1600 N. 800 N. none of these 400 N.

400 N.

In which case would you have the largest mass of gold? If your chunk of gold weighed 1 N on the Moon? Earth? planet Jupiter?

Moon?

When you stand at rest on a pair of bathroom scales, the readings on the scales will always add to equal your weight. each be half your weight. each equal your weight.

add to equal your weight.

When you stand at rest on a pair of bathroom scales, the readings on the scales will always each equal your weight. each be half your weight. add to equal your weight.

add to equal your weight.

An object in mechanical equilibrium is an object all of these moving with constant velocity. having no acceleration. at rest.

all of these

Which has zero acceleration? An object in mechanical equilibrium. none of these moving at constant velocity. all of these at rest.

all of these

The resistive force of friction occurs for solids. gases. liquids. all of these.

all of these.

Which has the greater mass? king-size pillow automobile battery both about the same

automobile battery

The amount of frection that occurs when two material surfaces slide against each other depends on how much they are pressed together. both of these none of these the "stickiness" of atoms on their surfaces.

both of these

Whereas Aristotle relied on logic in explaining nature, Galileo relied on logic also. patterns. mathematics. experiment.

experiment.

One object that has twice as much mass as another object also has twice as much volume. inertia. all of these velocity. gravitational acceleration.

inertia.

Whenever the net force on an object is zero, its acceleration is zero. may be zero.

is zero.

A kilogram is a measure of an object's gravity. force. weight. mass. center of mass.

mass.

Your weight is actually your mass. the same in all locations. a property of mechanical equilibrium. the gravitational attraction between you and the Earth.

the gravitational attraction between you and the Earth.

If you push a crate across a level floor at constant speed, the friction between the crate and the floor is a bit more than your pushing force. a bit less than your pushing force. none of these the same amount as your pushing force.

the same amount as your pushing force.

If you push a crate across a level floor at constant speed, the friction between the crate and the floor is a bit more than your pushing force. none of these the same amount as your pushing force. a bit less than your pushing force.

the same amount as your pushing force.

If you push a crate across a level floor at constant speed, the friction between the crate and the floor is the same amount as your pushing force. none of these a bit less than your pushing force. a bit more than your pushing force.

the same amount as your pushing force.

Compared with the mass of a certain object on Earth, the mass of the same object on the Moon is the same. more. less.

the same.

Which has zero acceleration? An object none of these at rest. moving at constant velocity. in mechanical equilibrium. all of these

all of these

The scientist to first introduce the concept of inertia was Copernicus. Galileo. Newton. Aristotle.

Galileo.

The amount of frection that occurs when two material surfaces slide against each other depends on the "stickiness" of atoms on their surfaces. none of these how much they are pressed together. both of these

both of these

Galileo's interpretation of motion differed from Aristotle's in that Galileo emphasized all of these the acceleration of free-fall. the role of distance in describing motion. time rates. none of these

time rates.