Force, Moments, Work amd Power - Physics

Question 1

Mesurement of Force

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 object 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 objects to move

Question 8

Newtometer/Spring Balence

Answer 8

Used to measure force

Question 9

Forces always occur in pairs

Answer 9

For every force there is an equal and opposite force

Question 10

High Friction

Answer 10

Samd paper, car tyres and rough-soled shoes

Question 11

Low friction

Answer 11

Wet soap, ice and glass

Question 12

Lubricant

Answer 12

Anything that reduces friction

Question 13

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

Answer 13

We would weigh less, but have the same mass

Question 14

Lever

Answer 14

A lever is a rigid body which is free to turn about a fixed point called a fulcrum

Question 15

Moment

Answer 15

The turning effect of a force (force multiplied by the perpendicular distance from the fulcrum )

Question 16

The law of the lever

Answer 16

When a lever is balenced, the clockwise and anti clockwise moments are equal

Question 17

Force

Answer 17

A force is anything that causes an object to change its velocity