SPEED
GRAVITY
FRICTION
FORCE

OTHER FACTS
100
This is used to calculate speed.
What is speed=distance/time
100
This is the force of attraction between objects due to their masses.
What is gravity?
100
A force that opposes motion between two surfaces that are in contact.
What is friction?
100
Scientists use this unit to measure force.
What is the newton?
100
This is an example of an unseen force.
What are gravity, attraction between magnets, static electricity?
200
The object that appears to stay in place in regards to another object.
What is a reference point?
200
Earth's gravitational pull is so large because of this.
What is Earht's large mass?
200
The amount of friction between objects depends on this.
What is the amount of force on the objects?
200
Describe a force.
What is a push or pull?
200
These are two types of kinetic friction.
What is sliding and rolling friction?
300
The average seed an object would be travelling if it were going 450 miles in 5 hours.
What is 90 mph?
300
This is the measurement of the amount of matter in an object.
What is mass?
300
Explain kinetic friction.
What is the amount of friction between moving objects?
300
The combination of all forces acting on an object.
What is net force?
300
This scientist created the three laws of motion.
Who is Sir Isaac Newton?
400
This is the speed of an object in a certain direction.
What is velocity?
400
This changes when y;ou ;leave Earht and travel to the moon because of the change in gravity.
What is weight?
400
This is when a force is applied to an object, but it doesn't move.
What is static friction?
400
This is how you determine the net force acting on an object in the same direction.
What is adding the forces together?
400
This is the net force on an object if you have 2 people pushing on a piano with the forces of 15 N and 18 N.
What is 33 N?
500
Any of these changes would show an object is acceterating.
What is a change in speed, direction or both?
500
This law states that all objests are attracted to each other through gravitational force based on their masses and the distances they are apart.
What is the Law of Universal Gravitation?
500
These substances are applied to the surfaces to reduce the amount of friction between the surfaces.
What iare lubricants?
500
This is the difference between balanced and unbalanced forces.
What is balanced forces have a net force of 0N and unbalanced forces do not?
500
Determine the acceleration of an object going from 100 cm to 175 cm in 5 sec.
What is 15 cm/s?
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