Forces and Motion

Question 1

Definition of a Force?

Answer 1

A push or a pull that can change motion.

Question 2

Definition of Thrust?

Answer 2

Push force in the direction of motion.

Question 3

Definition of Friction?

Answer 3

Force which opposes motion e.g drag.

Question 4

Definition of Normal Reaction?

Answer 4

Force exerted upon an object in contact e.g support.

Question 5

Definition of Weight?

Answer 5

Downwards Force Due to Gravity.

Question 6

Equation for Weight?

Answer 6

Weight= Mass x Gravity.

Question 7

What is the Gravity on earth?

Answer 7

10ms-2.

Question 8

What is Newton’s second law?

Answer 8

Forces unbalanced= net-force= accelerating/ decorating.

Question 9

Equation for Net Force?

Answer 9

Net Force= Mass x Acceleration.

Question 10

Definition of Acceleration?

Answer 10

Rate at which velocity of an object changes.

Question 11

Equation for Velocity?

Answer 11

V= Acceleration x time.

Question 12

Unit for Velocity?

Answer 12

ms-1.

Question 13

Unit for Acceleration.

Answer 13

ms-2.

Question 14

Definition of Velocity?

Answer 14

Rate at which distance changes.

Question 15

Equation for distance?

Answer 15

Distance= velocity x time.

Question 16

What is Newton’s first law?

Answer 16

Forces balanced= no net force= constant speed or stationary.