Force and Motion/ Simple Machines

What would happen to a truck if several people begin to push it?

• The truck's speed would decrease

• The truck's speed would increase

• The truck would lift off the ground

• The truck would fly

What is force?

• A push or pull on an object

• A simple machine

• Speed

• Velocity

How does a simple machine make it easier to do work?

• uses many parts to increase force on an object

• decreases the force of gravity on an object

• decreases the speed on an object

• Decreases the force needed to move an object

Which requires the GREATEST amount of force to move?

• bed

• person

• bicycle

• train

Why is pushing a heavy object up a ramp easier than lifting it with your arms?

• Pushing the object makes it lighter.

• The ramp is an inclined plane that changes the effort force into a larger resulting force.

• It is easier to push an object than to pull it.

• You could hurt yourself lifting the heavy object.

An inclined plane makes it easier to move an object by changing

• It's direction

• The weight of the object

• The distance over which the object moves.

• A weak force to a strong force

A seesaw is an example of which simple machine?

• wedge

• inclined plane

• wheel and axle

• lever

A wagon is an example of which simple machine?

• pulley

• lever

• screw

• wheel and axle

Which type of force does a person use to make you swing higher?

• pull

• up

• speed

• push

A ramp is an example of which type of simple machine?

• pulley

• inclined plane

• screw

• balance