Chapter 6B - Motion

Question 0

What does zero velocity mean?

Answer 0

An object has no displacement or it traveled in a circle.

Question 1

What is the difference between speed and velocity?

Answer 1

Speed is the rate of distance traveled in a certain amount if time. However, velocity is the rate of change in position over a certain amount of time and it includes a direction.

Question 2

What does zero acceleration mean?

Answer 2

Something has a constant speed. It’s acceleration is 0m/s squared.

Question 3

A person walks toward the back of a train car at 2 m/s. If the train travels forward at 14 m/s, what is the person’s relative velocity?

Answer 3

-12 m/s

Question 4

What is the momentum of a 60 kg object moving at 30 m/s?

Answer 4

1800 kg . m/s

Question 5

State the Law of Conservation of Momentum.

Answer 5

The amount of momentum before a collision is equal to the amount of momentum after a collision.

Question 6

Define Energy.

Answer 6

The ability to make matter move or change.

Question 7

Thermal

Answer 7

Heat

Question 8

Sound

Answer 8

Vibrations

Question 9

Electromagnetic

Answer 9

Light / Radiation

Question 10

Chemical

Answer 10

Molecular Bonds

Question 11

Nuclear

Answer 11

Holds protons and neutrons together in atomic nuclei

Question 12

Magnetic

Answer 12

Stored in field around magnet

Question 13

Mechanical

Answer 13

Moving objects

Question 14

Electric

Answer 14

Moving electrons

Question 15

What is the Law of Conservation of Energy?

Answer 15

Energy cannot be created nor destroyed. It can only change its form.