Force, Moments, Work And Power

Question 1

Forces are measured in

Answer 1

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

Forces

Answer 8

Is anything which causes an object to change its velocity

Question 9

Newton meter

Answer 9

To measure force we use a newton meter

Question 10

Forces always occur in pairs

Answer 10

For every force there is an equal and opposite force

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

Anything that reduces friction friction

Question 14

What would happen to our weight if we were on the moon

Answer 14

As gravity is less on the moon than on earth, we would weigh less

Question 15

Lever

Answer 15

Is a rigid body which is free to turn about a fixed point called the fulcrum

Question 16

Moment

Answer 16

The turning affect of a force

Moment if a force = (force X perpendicular distance from the force to the fulcrum)