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Question 1

Motion

Answer 1

When an object is in motion,you can describe the direction of its motion with a reference direction, such as North,East,South,West,or up and down.

Question 2

Speed

Answer 2

the rate at which an object moves.

Question 3

Velocity

Answer 3

The speed of an object in a particular direction.

Question 4

Acceleration

Answer 4

The rate at which velocity changes.

Question 5

Force

Answer 5

A push or a pull.

Question 6

Newton

Answer 6

Unit to express force.

Question 7

Net force

Answer 7

Combining all the forces exerted on an object.

Question 8

Friction

Answer 8

Force that opposes motion between two surfaces that are touching.

Question 9

Gravity

Answer 9

Force of attraction between objects due to their masses.

Question 10

Weight

Answer 10

Measure of the gravitational force exerted on an object.

Question 11

Mass

Answer 11

The amount of mass in an object

Question 12

Fluid friction

Answer 12

Sliding friction between your feet and the floor.

Question 13

Static friction

Answer 13

When a force is applied to an object but does not cause the object to move.

Question 14

Sliding friction

Answer 14

If you push and eraser across a desk it will move a little ways then stop.

Question 15

Rolling friction

Answer 15

The friction between the wheels and the floor.