Force and Motion Review

Force is a ____________ or _____________.

• Push or pull

• Push or move

• Speed or distance

• Speed or acceleration

Which of the following is NOT an example of force?

• throwing

• lifting

• pushing

• sitting

What is the force that pulls objects toward Earth?

• Inertia

• Acceleration

• Gravity

• Work

Friction is _____________________________.

• a type of work done when two simple machines work together

• a way to make work easier

• a force that opposes the motion of one object moving past another

• a force that is created when two objects work together

How much force is needed to move a heavy object?

• A large, strong force

• A small, weak force

• A short, strong acceleration

• A long, weak acceleration

Balanced forces are________________.

• forces that do not cancel each other out and cause the object to change it's motion

• forces that act together on an object without changing it's motion

Unbalanced forces are_______________.

• forces that do not cancel each other out and cause an object to change its motion

• forces that act together on an object without changing its motion

Acceleration is ________________________.

• a change in direction and force over time

• a change in speed and force over time

• a change in speed and direction over time

• a change in work and direction over time

Contact force happens between objects that _________.

• move

• touch

• contract

• work

Which of the following is NOT an example of a noncontact force?

• magnetism

• gravity

• electricity

• acceleration