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100
Type of friction that falling objects experience.
Air Resistance
100
A push or a pull.
Force
100
The amount of matter in an object.
Mass
100
The force that pulls falling objects towards Earth.
Gravity
100
A unit of pressure.
A Pascal
200
An object that is thrown.
Projectile Object
200
The SI unit for force.
Newton
200
The force that one surface exerts on another when the two rub against each other.
Friction
200
The tendency of an object to resist change in its motion.
Inertia
200
The force of gravity on a person or object on the surface of a planet.
Weight
300
What will happen to an object that is more dense than water if it is placed in water?
It will sink.
300
The overall force on an object after all the forces are added together.
Net Force
300
Which direction does a buoyant force act?
In an upward direction.
300
What happens to the pressure as the area over which a force is distributed increases?
The pressure decreases
300
What law states that any two objects in the universe, without exception, attract each other?
The Law of Universal Gravitation
400
What will happen if unbalanced forces are exerted on an object?
There will be a change in the object's motion.
400
What is the only force acting on an object when it is in free fall?
Gravity
400
How is mass related to inertia?
The greater the mass, the greater the inertia.
400
How is water pressure related to the depth of the water?
Water pressure increases as depth increases.
400
When referring to forces what does the head of the arrow indicate?
The direction of the force.
500
Why can a person walk on deep snow with snowshoes?
The snowshoes increase the area over which the person's weight is distributed.
500
State Archimedes' Principle
The buoyant force on an object is equal to the weight of the fluid displaced by the object.
500
What is the law of conservation of momentum state?
When two objects collide in the absence of friction momentum is not lost.
500
State Newton's Third Law of Motion
For every action there is an opposite and equal reaction.
500
When referring to force what does the length of an arrow indicate?
Amount or size of the force.