MOTION
FORCES
FRICTION
GRAVITY
ACCELERATION
100
Direction of an objects motion.
What do north, south, east, west, up and down tell us?
100
All forces have what?
What is size and direction?
100
Why does friction occur?
What is a rough surface?
100
What does all matter have?
What is mass?
100
If an objects speed, direction or both change what is that object doing?
What is accelerating?
200
The distance ran and the time it took to run it.
How do you determine speed?
200
How do scientist measure force?
What is a newton?
200
What are two factors that affect friction?
What the force pushing pushing the two surfaces together and what is the roughness of the surface?
200
How can the force of gravity change the motion of an object?
What is a change in speed direction or both?
200
Positive acceleration
What is an increase in the velocity called?
300
The formula distance divided by time lets us determine what
What is speed?
300
Net force.
What is the combination of all forces acting on an object?
300
What are the two types of friction?
What is kinetic and static friction?
300
Why is the earth's gravitational force so large?
What is the earth has mass?
300
Negative acceleration
What is a decrease in velocity called?
400
What are two ways that velocity can change?
What is change in speed or a change in direction?
400
When the net force is 0 newtons, what do you have?
What is a balanced force?
400
How does a force pushing two surfaces together affect the friction between the surfaces?
What is an increase in friction?
400
Law of universal gravitation.
What law describes the relationship between gravitational force, mass and distance?
400
The velocity of the car because the direction is changing.
What happens when a car goes around a curve at a constant speed?
500
The distance traveled and the time taken to travel that distance.
What is the difference between speed and velocity?
500
A boy pulls a wagon with a force of 6 newtons east as another boy pushes it with a force of 4 newtons east. What is the net force?
What is 10 Newtons?
500
What are two ways that friction can be increased?
What are making surfaces rougher and increasing the force pushing the two surfaces together?
500
Mass is the amount of matter in an object. Weight is a measure of gravitational force on an object.
What is the difference between mass and weight?
500
A cheetah running straight north at a constant speed of 50 m/s.
What is not an example of acceleration?
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