A change in speed or direction of an object's motion
What is acceleration
100
The force that acts between all masses and causes them to attract one another
What is gravitation
100
Two girls are pushing a box on the right. They each apply a force of30 newtons. At the same time a boy on the left is pushing back. He is applying 15 newtons, making the net force of the box
What is 15 newtons
100
Two things that help determine speed when measured
What is distance and time
200
a slanted surface
What is an inclined plane
200
The property of matter that keeps a moving object moving in a straight line or at rest
What is inertia
200
A fixed point on a lever
What is a fulcrum
200
The same force is applied to a baseball, a football, a golf ball, and a soccer ball. The greatest acceleration came from
What is the golf ball
200
A student wants to explain what is meant by mass. He described the mass of his body
What is by the amount of matter in his body
300
Two inclined planes placed back to back
What is a wedge
300
The change of position during a unit of time
What is speed
300
A force that resists motion, relative to each other of object's that are touching
What is friction
300
Two arm wrestlers exert a force on each other's hands and the hands don't move. This is an example of
What is balanced force
300
A little boy is holding a fishing rod. Where is the fulcrum located
What is in his hand
400
A post with threads wrapped around it
What is a screw
400
The speed and direction of an object
What is velocity
400
The force of attraction between Earth and other objects
What is gravity
400
A heavy ball and a light ball are rolling at the same speed on the same surface. The heavy ball will be harder to stop because
What is it has greater momentum
400
Screws have threads that are simple machines. Which is a what kind of machine
What is inclined planes
500
A wheel with a line around it
What is a pulley
500
A push or a pull
What is force
500
The use of force to move an object over a distance