P1: Forces and Motion KEYWORDS

Question 1

Increase speed

Answer 1

Acceleration

Question 2

Force caused by an object colliding with air particles

Answer 2

Air resistance

Question 3

We say the forces acting on an object are this when it isn’t moving or travelling at a constant speed

Answer 3

Balanced

Question 4

The mass of an object per volume

Answer 4

Density

Question 5

A word to describe the amount a spring stretches by

Answer 5

Extension

Question 6

Force caused by two surfaces moving against each other

Answer 6

Friction

Question 7

Force which gives weight to objects of mass

Answer 7

Gravity

Question 8

“The extension of a spring is directly proportional to the applied force, providing the elastic limit is not exceeded”

Answer 8

Hooke’s Law

Question 9

Unit of force.

Answer 9

Newton (N)

Question 10

Distance / Time

Answer 10

Speed

Question 11

How fast something moves in a particular direction.

Answer 11

Velocity

Question 12

Amount of space an object occupies

Answer 12

Volume

Question 13

Upward force exerted on objects placed in water

Answer 13

Upthrust

Question 14

Type of substance which reduces the amount of friction between two surfaces

Answer 14

Lubricant

Question 15

Type of force, such as friction and upthrust, which relies on objects touching each other

Answer 15

Contact