Physics-P5

Question 1

What is a contact force?

Answer 1

Two objects have to be touching for a force to act e.g friction

Question 2

What is a non contact force?

Answer 2

When two objects don’t need to be touching for a force to act e.g magnetic force

Question 3

What is mass measured in?

Answer 3

Kilograms kg

Question 4

What is weight measured in?

Answer 4

Newtons N

Question 5

What is the equation for working out weight?

Answer 5

Weight= mass X gravitational field strength

Question 6

What do unbalanced forces cause?

Answer 6

Unbalanced forces cause acceleration

Question 7

What do balanced forces cause?

Answer 7

No acceleration

Question 8

What is acceleration?
What is it measured in?

Answer 8

Change in velocity in a certain amount of time

M/s squared

Question 9

What two things add to stopping distance?

Answer 9

Thinking and breaking distance

Question 10

What can increase thinking distance?

Answer 10

Driver fatigue
Tiredness
Distractions
Influence of drugs/alcohol

Question 11

What can increase braking distance?

Answer 11

Poor road conditions
Worn tires

Question 12

How do you work out the extension?

Answer 12

Loaded length - initial length