Science-Motion

Question 1

Distance

Answer 1

To describe how far something has moved. Longer distances are measure in kilometers.

Question 2

Displacement

Answer 2

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

Question 3

Speed

Answer 3

The distance an object travels per unit of time.

Question 4

Average Speed

Answer 4

The total distance traveled divided by the time of travel. Also can be calculated using the relationships among speed, distance, and time.

Question 5

Instantaneous Speed

Answer 5

The speed at at given point in time. The speed shown on a speedometer is the Instantaneous Speed.

Question 6

Velocity

Answer 6

The speed of an object and the direction of it’s motion.

Question 7

Acceleration

Answer 7

The rate of change of velocity. When the velocity of an object changes,the object is accelerating.

Question 8

Net Force

Answer 8

When two or more forces act on an object at the same time, the forces combine to form the net Force.

Question 8

Force

Answer 8

A push or pull upon an object resulting from the object’s interaction with another object

Question 9

Balanced Forces

Answer 9

Forces on a object that are equal in size opposite in direction.

Question 10

Inertia

Answer 10

The tendency of an object to resist any change in it’s motion and when an object is moving.

Question 11

Newtons second law of Motion

Answer 11

Force= the mass of an object x acceleration.

Question 12

Friction

Answer 12

The force that opposes the sliding motion of two surfaces that are touching each other.

Question 13

Static Friction

Answer 13

The frictional force that prevents two surfaces from sliding past each other.

Question 14

Sliding Friction

Answer 14

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

Question 15

Air Resistance

Answer 15

Opposes the motion of objects to fall with different accelerations and different speeds. If there was no air Resistance then all objects would fall.

Question 16

Gravity

Answer 16

An attractive force between any two objects that depends on the masses of the objects and the distance between them.

Question 17

Weight

Answer 17

The gravitational force exerted on an object. The weight of an object on Earth is equal to the force on Earth’s gravity on the objects.

Question 18

Centripetal Acceleration

Answer 18

Acceleration toward the center of a curved or circular path.

Question 19

Centripetal force

Answer 19

The net Force exerted toward the center of a curved path.

Question 20

Newtons third law of motion

Answer 20

For every action there is an equal or opposite reaction.

Question 21

Momentum

Answer 21

All objects have mass so if an object is moving, then it has momentum.i The amount of momentum that an object has is dependent upon two variables, how much stuff is moving and how fast the stuff is moving.