Vocabulary
A push or a pull
Force
True or False: All forces must be contact forces to make an object move.
False
Words like next to, behind, near, in front of are describing an object's...
position
True or False? Gravity is a noncontact force
True
The change in position of an object
motion
A paper clip and a rubber band are on a table. A magnet is moved over them and the paper clips jumps to stick to it. What does that tell you about the paper clip?
It contains iron.
An object that is always moving at the same speed would have what kind of speed?
constant
The amount of gravity pushing down on you measures your what?
weight
The location of an object
Position
What always changes about an object when it is in motion?
It's position
What would you need in order to push a cart full of groceries verses an empty cart?
More Force
You would weight less on the moon because of what?
less gravity
A noncontact force that pulls on objects containing iron.
magnetism
You and a friend are having a tug of war, but the rope is not moving. What does that tell you about the force?
It is balanced.
The rate at which an object changes position
speed
Gravity pulls objects towards...
Earth
A contact force that opposes the motion of an object.
Friction
A ball is rolling across the parking lot, but suddenly stops when it goes on the grass. Why?
An object that changes speeds often has what kind of speed?
variable speed
True or False? Gravity does not work unless there is contact with an object.
False