Contact Forces
What are the 4 types of contact forces?
Applied, Friction, Tension and elastic/spring
Why do we have simple machines?
To make life easier
What simple machine did they use to make music?
wheel & axle
Applying a force to a cart to move it forward is an example of a _____
Push
A wheel stopper on a trailer is an example of a ____ simple machine
Wedge
What simple machine was the fishing spear?
Lever
Applying a force to move someone in a wagon is an example of a ____
Pull
A ____ is used to lift heavy objects off the ground
Pulley
What simple machine was the sled?
Incline
Pushing and pulling is an _____ force
Applied
A ____ can be used to put things into a truck when you're moving houses
Inclined Plane
What were used as a wedge because of their sharp and pointed shape?
Antlers
What are words you can use to describe the strength of a force?
Strong, weak, large, small
A hammer pulling out a nail is an example of a ____
What type of simple machine are paddles?
Levers because they help you move things with a pushing or pulling motion.
What is Newton's First Law of Motion?
If something is sitting still, it wants to keep sitting still. And if something is moving, it wants to keep moving in the same way unless something else pushes or pulls on it.