Phys test 2

A man weighing 400 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.

• 400 N.

• 800 N.

• none of these

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

• more than 10 N.

• less than 10 N.

• 10 N.

If one object has twice as much mass as another object, it also has twice as much

• inertia.

• velocity.

• acceleration due to gravity.

• volume

A rock weighs 30 N on Earth. A second rock weighs 30 N on the moon. Which of the two rocks has the greater mass?

• the one on Earth

• the one on the moon

• They have the same mass.

• not enough information to say

A rock weighs 30 N on Earth. A second rock weighs 30 N on the moon. Which of the two rocks has the greater mass?

• the one on Earth

• the one on the moon

• They have the same mass.

• not enough information to say

An object is pulled northward by a force of 10 N and at the same time another force of 35 N pulls it southward. The magnitude of the resultant force on the object is

• 0 N.

• 5 N.

• 25 N.

• 45 N.

A baseball player bats a ball with a force of 1000 N. The reaction force that the ball exerts against the bat is

• less than 1000 N.

• more than 1000 N.

• 1000 N.

• impossible to determine.

"For every action, there is an equal and opposite reaction."

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

Force = Mass x Acceleration

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

"An object in motion (or at rest) will to stay in motion (or at rest) until an outside force acts upon it."

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law