An object does this when it is travelling around another object in space
What is orbiting?
100
When a spacecraft orbits Earth, it is moving in this direction.
What is forward?
100
An object that falls at a constant velocity is called this
What is terminal velocity?
100
This is a measure of gravitational force
What is weight?
200
Gravity affects only this component of projectile motion.
What is the vertical component?
200
This is the force that opposes the motion of objects throuh air
What is air resistance?
200
This depends on an object's mass & velocity?
What is momentum?
200
p=m x v
What is the formula for momentum?
200
Projectile motion has this many components
What is two?
300
An object @ rest remains @ rest, & an object in motion remains in motion @ constant speed & in a straight line unless acted on by an unbalanced force is called this.
What is Newton's First Law of Motion?
300
These are the two components of projectile motion.
What are horizontal & vertical?
300
This is motion that is perpendicular to the ground
What is vertical motion?
300
Acceleration depends on force and this
What is mass?
300
A force that opposes motion between 2 surfaces that are in contact is called this
What is friction?
400
This is the rate at which velocity changes over time
What is acceleration?
400
This is the motion of a body when only a force of gravity is acting on the body.
What is free fall?
400
An object in circular motion is constantly changing this
What is direction?
400
This is the tendency of all objects to resist any change in motion?
What is inertia?
400
A piece of paper falls more slowly than crumpled paper because of this
What is air resistance?
500
This is the curved path an object follows when it is thrown.
What is projectile motion?
500
Whenever one object exerts a force on a 2nd objtect, the 2nd object exerts an equal & opposite force on the 1st is called what?
What is Newton's Third Law of Motion?
500
An unbalanced force that causes objects to move in a circular path is called this.
What is centripetal force?
500
This states that any time objects collide, the total amount of momentum stays the same
What is law of conservation of momentum?
500
The acceleration of an object depends on the mass of the object & the amount of force applied is called this