Question: decrease

Answer: If Earth’s radius somehow increased with no change in mass, your weight would

A) increase also.

B) decrease.

C) stay the same.

Question: a component of gravitational force parallel to the plane soon acts on it

Answer:

Question: the constant g

Answer: The difference between Newton’s law as a proportion and an equation involves

A) the constant G.

B) the equal sign.

C) one being a vector and the other not.

D) magnitude and direction.

Question: increases

Answer: As two objects moving toward each other due to gravity get closer, the acceleration of each

A) decreases.

B) remains constant.

C) increases.

Question: none of the above

Answer: Two planets in space gravitationally attract each other. If both the masses and distances are doubled, the force between them is

A) one-quarter.

B) half as much.

C) twice as much.

D) four times as much.

E) none of the above

Question: A weight watcher who normally weighs 400 N stands on top of a very tall ladder so she is one Earth radius above Earth’s surface. How much is her weight there?

A) 0

B) 100 N

C) 200 N

D) 400 N

E) none of the above

Answer: 100N

Question: the normal force

Answer: If you jounce up and down on a bathroom scale, what varies on the scale reading is

A) mg.

B) the normal force.

C) both of these

D) neither of these

Question: all of the above

Answer: You can experience weight

A) standing on Earth’s surface.

B) in an accelerating elevator away from Earth.

C) in a rotating habitat in space.

D) all of the above

Question: weight is zero

Answer: Inside a freely-falling runaway elevator, your

A) acceleration is zero.

B) weight is zero.

C) gravitational interaction with Earth is zero.

D) all of the above

E) none of the above

Question: weight

Answer: Inside a freely-falling elevator, you would have no

A) gravitational force on you.

B) weight.

C) both of these

D) neither of these