A
Opposing forces which prevent work from being done.
What are balanced forces.
As objects change position, they are "in" this.
What is motion.
The push or pull on an object.
What is force.
The movement resulting from force.
What is work
A force that works against motion along a surface.
What is friction
All work is the result of this.
What is force.
When two objects bump into each other, we call it this.
What is a collision
Two objects rubbing against each other is an example of this.
What is friction
What is repel.
An object in motion will do this unless acted upon by an unbalanced force.
What is move in a straight line at a constant speed.
What is attract
This scientist discovered the laws of motion.
Who is Sir Isaac Newton
Mass, speed and direction are all part of an object's moving this.
What is energy
This is what an object at ret will do unless acted upon by an unbalanced force.
What is stay at rest
The property of matter that makes it resist a change in motion is called this.
What is inertia
When something has been moved, this has happened.
What is work
This happens to an object's speed during a collision.
What is it slows down
The force of gravity on an object.
What is weight
This is the skeleton of a building which gives it its shape.
What is frame
This refers to the attracting force between two objects.
What is gravity
This machine makes lifting things easier.
What is a pulley
This device generates electromagnetic force.
What is an electromagnet.
This substance minimizes friction.
What is lubricant
This part of a lever holds and balances weight.
What is the fulcrum.
This refers to the base of a building.
What is the foundation.