Show:
Motion
Force
Friction
More Friction
Gravity
100
When an object changes position over time when compared with a reference point, the object is in ________
What is motion
100
The rate at which velocity changes
What is acceleration
100
A force that opposes motion between two surfaces that are touching
What is friction
100
Substances applied to surfaces to reduce friction
What are lubricants
100
The force of attraction between two objects due to their masses.
What is gravity
200
The object that appears to stay in place
What is a reference point
200
a push or pull
What is force
200
The two factors that create more friction are ___________
What are rougher surfaces and greater force.
200
Ball bearings are placed between wheels and axles to
reduce friction
200
A British scientist who worked on forces and light.
Who is Sir Isaac Newton
300
The rate at which an object moves
What is speed
300
Scientists measure force using a ______
What is a newton
300
Sledding down a snowy hill is an example of
What is sliding friction
300
Sand is scattered along icy roads to
increase friction
300
Describes the relationships between gravity, force, mass, and distance.
What is the law of universal gravitation
400
Total distance divided by total time
What is average speed
400
the force that results from combining all the forces exerted on an object.
What is a net force
400
The Goldline in Pasadena is an example of
What is rolling friction
400
When force is applied to an object, but the object does not move, ___________ occurs.
What is static friction
400
Increases as distance decreases
What is gravitational force
500
The speed of an object in a particular direction.
What is velocity
500
When the net force on an object is not zero, the forces on the object are______________
What is unbalanced
500
Slipping on a wet floor is an example of
What is fluid friction
500
Friction occurs because the microscopic _________ and _________ of two surfaces stick to one another.
What are hills and valleys
500
The amount of matter in an object
What is mass