Physics CBA1 review

An object at rest will _______ if no outside forces are applied.

• continue moving

• stay at rest

• Speed up

• Slow down

A greater applied force is required to move an object with a greater mass than one with a smaller mass.

• True

• False

A baseball and a cannonball are dropped from the same height at the same time in a perfect vaccum, which ball will hit the ground first?

• Baseball

• Basketball

• Cannonball

• They hit at the same time

Which of the following explains the difference between speed and velocity

• Newtons 8th law

• one shows direction and magnitude while the other simply shows direction

• one shows direction and magnitude while the other simply shows magnitude

• Newtons 3rd law

The gravitational force is greater between two objects that

• Have low masses

• are farther apart

• have a rough surface

• are close together

When I sit in a wheelchair and throw my backpack forward which way will I move?

I sit in a wheelchair and throw my backpack forward. The force I exert is ______________ and the force the backpack exerts is ____________

• Forward, forward

• backward, forward

• Backwards, backwards

• Forwards, backwards

An unbalanced force can make all of these things happen except...

• an object changes direction

• an object slows down

• an object sits still

• an object speeds up

If all four forces are balanced, the plane will

• Fall out of the air

• Fly faster and faster

• continue flying at a constant speed and direction

• slow down

To determine if something is moving or changing direction you need

• A calculator

• A non moving background

• A high speed camera lense

• A magnifying glass