Forces

Question 1

Friction

Answer 1

The force that opposes motion between two surfaces in contact

Question 2

Elastic force

Answer 2

The force acting on a stretched/compressed elastic object to return it to its original shape

Question 3

Gravitational force

Answer 3

The force that attracts two objects towards one another

Question 4

Weight

Answer 4

The measure of the gravitational force acting on an object
(N)

Question 5

Mass

Answer 5

The amount of matter in an object
(kg)

Question 6

Moon weight

Answer 6

1/6 x earth weight

Question 7

Drinking straw

Answer 7

Some air is removed from the straw, air pressure inside decreases and becomes lower than the surrounding atmospheric pressure. Higher atmospheric pressure pushes liquid up the straw and into the mouth

Question 8

Turning effect

Answer 8

A force applied on an object can cause a turning effect about a fixed point called the pivot

Question 9

Pressure

Answer 9

Force acting per unit area in contact with an object

Question 10

Work done

Answer 10

The transfer of energy through application of a force