Force, Moments, Work And Power

Question 1

Force

Answer 1

Anything which causes an object to change its velocity.

Force is measured in Newtons.

Question 2

Push

Answer 2

Changes the velocity of an object

Question 3

Pull

Answer 3

Changes the velocity of an object

Question 4

Weight

Answer 4

Moves objects towards the ground

Question 5

Friction

Answer 5

Slows down moving objects

Question 6

Electric

Answer 6

Causes charged particles to move

Question 7

Magnetic

Answer 7

Causes magnetic materials to move

Question 8

To measure force

Answer 8

We use a newton meter also called a spring balance

Question 9

Forces always occur in

Answer 9

Pairs

Question 10

Friction

Answer 10

is the force that prevents easy movement between two objects in contact

Question 11

High friction

Answer 11

Sand paper, Car Tyres and rough soled shoes

Question 12

Low Friction

Answer 12

wet soap, ice and glass

Question 13

LUBRICANT

Answer 13

is anything that reduces friction

Question 14

Work

Answer 14

is done when a force moves an object

Question 15

Power

Answer 15

is the rate at which work is done

Question 16

Hooke’s Law

Answer 16

states that the extension of an elastic body (a spring) is directly proportional to the force applied to it.

Question 17

Proportional

Answer 17

A straight line graph tells you that the two things on the graph.

Question 18

When gravity acts on our mass we can find our

Answer 18

Weight

Question 19

Weight =

Answer 19

mass x gravity

Question 20

Hooked Law

Answer 20

States that the extension of an elastic body(a spring) is directly proportional to the force applied to it