Determining Motion
the change of an object’s position
motion
the ability to do work
What is energy?
a force that keeps objects from moving against other objects
What is friction
the speed of a moving object in a given direction
What is velocity?
occurs whenever an object speeds up, slows down, or changes direction
What is acceleration?
determined by the mass and velocity of an object
What is momentum?
When one object exerts a force on another object, the second
object reacts by exerting an equal force back on the first object.
What is the Third Law of Motion?
An object at rest tends to stay at rest, and an object in motion
tends to stay in motion with the same direction and speed.
What is the First Law of Motion?
Force is equal to the mass of an object and its acceleration.
What is the Second Law of Motion?
Ruth likes to play softball and go bowling. She uses less force to throw
a softball than she uses when she rolls a bowling ball.
What is the Second Law of Motion?
Dad slammed on the brakes when a ball bounced out in front of our car.
My sister’s doll that had been on the back seat ended up on the floor
What is the First Law of Motion?
causes a soccer ball to stop as it rolls across the ground
What is friction?
amount of matter in that object
What is mass?
the gravitational force on the object
what is gravity?
the resistance to a change in motion
What is inertia?