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100
The direction of motion of an object is determined by studying the object's movement in relation to a
What is reference object/point
100
distance and time are the units used to describe
What is speed
100
The total distance traveled divided by the total time give the
What is average speed
100
When a object remains at rest, _____ forces must be acting on it
What is balanced
100
Acceleration is the changing of speed and/or
What is direction
200
Newton's second law is represented by the equation
What is f = ma
200
Displacement is this type of quantity.
What is vector
200
If forces are _____ an object will move.
What is unbalanced
200
Horizontal lines on a velocity/time graph shows _____ acceleration.
What is zero
200
Mass is a property of an object, while weight is a _____ that depends on where the object is.
What is force
300
A moving object that is not accelerating is moving at
What is constant speed
300
An _____ force is needed to bring a moving object to rest or to put an object at rest in motion.
What is unbalanced
300
The more _____ an object has, the less quickly it changes speed under the same force
What is Mass
300
If someone pushes on a swinging door, there is an equal and opposite _____ force that the door exerts on the person
What is reaction
300
An objects resistance to a change in motion is
What is inertia
400
A change in position is called
What is motion
400
The equation for speed is
What is s = d/t (speed equals distance divided by time)
400
A single point on a distance-time graph tells the
What is instantaneous speed
400
The distance and direction of an object's change in position from a reference point is
What is displacement
400
A merry go round moves at constant speed but changing
What is direction
500
On a distance/time graph, a slanting straight line indicates
What is constant speed
500
Energy is the ability to cause
What is change
500
When a elevator is moving upward at constant speed, its _____ energy is increasing
What is Potential
500
A measure of how far an object has moved is
What is distance
500
When an elevator is moving upward at constant speed its _____ energy is not changing
What is kinetic