force
motion
velocity
gravity
friction
100

A force that describes the word move

motion

100

what is motion.

motion is the movement of something.

100

why is velocity negative?

Velocity is the derivative of position.

100

what is gravity? 

 force that attracts all things with mass or energy.

100

what is friction

 force that resists the relative motion of two surfaces or objects in contact.

200

A force that keeps everything to the ground.

Gravity 

200

the change of ______ can determine yours speed

motion

200

Explain the main differences and similarities between velocity and speed.

speed doesn't depends on nature of the path 

OR velocity is moving at a distance or turning while moving.

200

Megan throws a paper airplane. How will gravity make the airplane move?

down toward the ground

200

how is friction made?

Created by two surfaces interacting.

300

What is the force that keeps a book falling after it is released?

gravity 

300
motion is how you _____

move

300

Apply a force to an object, and you could change its

speed or direction, or both

300

What is true about of Earth's gravity?

It pulls objects toward the Earth's surface without touching them.

300

how is friction reduced?

  1. When objects are rolled over the surface, the friction between the rolled object and the surface can be reduced by using ball bearings.
  2. Using lubricants such as oil or grease can reduce the friction between the surfaces.
  3. By polishing the surface, polishing makes the surface smooth and friction can be reduced.
400

Kyle and Jon are both pushing the same box. Kyle is pushing to the right. Jon is pushing to the left. Which of these would make the box move to the left?

Jon and Kyle push the box with the same amount of force.

400

what is motion in physics.

 phenomenon or change in position or orientation of an object with respect to time or its surroundings.

400

what is meant by velocity?

Vector quantity.

400

what does gravity do?

keeps everything equal to earth mass.

400

How is friction increased?

  1. Making the surfaces rough.
  2. Pressing the surfaces harder against each other.
500

Mark uses the same amount of force and time to push a small plastic container and then a much larger plastic container, both filled with water. Which BEST describes the motion and speed of the containers?

The smaller container will move faster and farther.

500

what puts a object in motion.

unbalanced force. 

500

 What is meant by constant velocity?

velocity that a particle acquires as a result of a particle crossing an equal linear path at certain time intervals.

500

what would happen if we had no gravity?

Everything would float away into space.

500

how is friction used with our shoes.

prevents our shoes slipping on the pavement.

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