motion and forces unit

Question 1

Distance

Answer 1

motion of an object is to describe how far it has moved

Question 2

speed

Answer 2

is the distance an object travels per unit of time

Question 3

Displacement

Answer 3

distance and direction of an objects change in position from the starting point

Question 4

Average Speed

Answer 4

Is the total distance traveled divided by the total time of travel

Question 5

Instantaneous speed

Answer 5

The speed given at a point in time

Question 6

velocity

Answer 6

includes the speed of an object and the direction of its motion

Question 7

acceleration

Answer 7

the rate of velocity change

Question 8

force

Answer 8

A push or a pull

Question 9

Net force

Answer 9

When two or more forces act on an object at the same time

Question 10

Balanced Forces

Answer 10

Forces on an object that are equal in size and opposite in direction

Question 11

Inertia

Answer 11

The tendency of an object to resist any change in its motion

Question 12

Newtons Second Law of Motion

Answer 12

The acceleration of an object is in the same direction as the net force on the object

Question 13

Friction

Answer 13

is the force that opposes the sliding motion of two surfaces

Question 14

Static friction

Answer 14

is the frictional force that prevents two surfaces from sliding past each other

Question 15

sliding friction

Answer 15

is the force that opposes the motion of two surfaces sliding past each other

Question 16

air resistance

Answer 16

opposes the motion of objects that move through the air

Question 17

Gravity

Answer 17

is an attractive force between any two objects that depends on the masses of the objects and distance between them

Question 18

weight

Answer 18

the gravitational force exerted on an object

Question 19

centripetal acceleration

Answer 19

acceleration toward the center of a curved or circular path

Question 20

centripetal force

Answer 20

The net force exerted toward the center of a curved path

Question 21

Newtons Third Law Of Motion

Answer 21

Describes the action reaction of pairs this way

Question 22

momentum

Answer 22

is the product of its mass and velocity