Friction
Force
Gravity
Energy
Potpourri
100

Friction is the . . .

What is a force that acts when two surfaces rub together

100
What is force?
Pushing or pulling
100
What is gravity?
What is the force which makes objects pull toward each other.
100
What is potential energy?
What is object's stored energy
100

What is speed?

What is the distance an object travels per unit of time

200

Which surface will SLOW the movement of a soccer ball the most.  Paved road, grassy field, sidewalk

What is grassy field

200
What is the unit used to measure force and who is it named after?
What is Newtons (N) after Sir Isaac Newton
200
How gravity and other forces act depends on three things?
What is mass, distance, and motion of the objects
200
What is kinetic energy?
What is the object's energy in motion
200

An object at rest will stay at rest, an object in motion stays in motion.  Which 3 of motion is this?  

What is 1st law or inertia

300

The amount of friction depends on . . .

What is surface and how hard the object's are pressed together

300
Which object would require the least amount of force to move and which object would require the most force to move. Bowling ball, golf ball, table tennis ball (ping-pong ball), soccer ball
What is table tennis ball - bowling ball
300
The force of gravity is stronger if objects are __________.
What is close together
300
A person is holding a wind up toy. They wind the toy and then let it go. Which part has potential and which part has kinetic energy.
What is winding it has potential and then releasing has kinetic
300

What is Newton's 3rd Law of Motion?  Think of a rocket blasting off

For every action there is an equal but opposite reaction

400
What is the motion of a guitar string being plucked
What is back and forth (vibration)
400
What happens if balanced forces are applied to a moving object?
What is the object keeps moving at the same speed and direction
400

What can you do to an object to make the force of gravity stronger?

What is increase the mass and shorten the distance

400
In a wrecking ball how does energy change forms.
What is when it held up in the air it has potential and when it is released it has kinetic
400
What is the difference between contact force and noncontact force? Give an example of each.
What is Contact means to touch and noncontact does not touch. a golf club hitting a golf - contact gravity and magnetism - noncontact
500

What are some ways to reduce friction?

What is use oil, wax, smoother surface, ball bearings

500
If two people each push equals masses, who pushes it the farthest?
What is the one who pushed with more force
500
How is mass and weight different?
What is mass is the amount of matter in an object. Weight is the measure of the force of gravity acting on the object's mass.
500
____________ is the ability to move something. How do I know that it has been done?
What is work - a change happens
500
What happens to the force of gravity between two objects when the mass of one of the objects increases?
What is it increases
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