Newton's Law of motion

Question 1

What is Newton’s First Law?

Answer 1

• law of inertia
• a body will remain in a state of rest or uniform velocity unless acted upon by an external or unbalanced force e.g. football

Question 2

give an example of N1

Answer 2

a football will remain on the spot until a force is applied from the players foot

Question 3

what is Newton’s Second Law?

Answer 3

• law of acceleration
• the acceleration of a body is proportional to the size of the force applied and takes place in the direction in which the force acts
• f = ma

Question 4

give an example of N2

Answer 4

the acceleration of a netball during a pass is proportional to the force from the players hand and is in the same direction as the force

Question 5

What is Newtons Third Law?

Answer 5

• law of reaction
• for every action there is an equal and opposite reaction, the reaction force is equal in size and opposite direction to the action force

Question 6

give an example of N3

Answer 6

as a runner pushes downwards and backwards of the sprint blocks (action force), the block pushes upwards and forwards to move the runner forward (reaction force: friction)