PHY- 108

A rock is thrown upward at 50e with respect to the horizontal. As it rises, its vertical component of velocity

decreases

The two measurements necessary for calculating average speed are

distance and time

A player hits a ball with a bat. The action force is the impact of the bat against the ball. The reaction to this force is the

force of the ball against the bat

If a freely falling object were somehow equipped with an odometer to measure the distance it travels, then the amount of distance it travels each succeeding second would be

grater than the second before

Which has zero acceleration? An object

all of these

For the astronauts inside the orbiting space shuttle, there is no force of Earth's gravity acting on them. This statement is

always false

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

the same

Which of the following has the largest momentum relative to the earth?

a dog running down the street

When you touch a cold piece of ice with your finger, energy flows

actually both ways

Hang from a pair of gym rings and the upward support forces of the rings will always

add up to equal your weight

Water pressure is greatest against the

bottom of a submerged object

A force is a vector quantity because it has both

magnitude and direction

A kilogram is a measure of an object's

mass

An object maintains its state of motion because it has

mass

What does an object have when moving that it doesn't have when at rest?

momentum

Newton discovered

that gravity is universal

If you push an object just as far while applying twice the force, you do

twice as much work

The force required to maintain an object at a constant velocity in free space is equal to

zero

earth satellites are typically more than 100 km high so as to be above the earth's

atmosphere