Newtons Laws Of Motion

Question 1

Newton’s first law

Answer 1

If there is no resultant force acting on an object
~if it is at rest, it will stay at rest
~if it is moving, it keeps on moving at a constant velocity (a constant speed in a straight line)

Question 2

Momentum linked to force

Answer 2

The greater and objects momentum the more force required to stop it

Question 3

Momentum equation

Answer 3

P = m * v

Question 4

Newtons second Law

Answer 4

F = m * a

Question 5

Newtons Second law newtons Observations

Answer 5

Newton realised that when a resultant force acts on an object it’s velocity changes.
This must mean that force causes a change in momentum.

Question 6

Newton’s second law in written form

Answer 6

The rate of change if momentum of an object is directly proportional to the resultant force acting on it. The change in momentum takes place in the direction of that force.

Question 7

Newton’s second law derived equation in relation to momentum

Answer 7

F=(mv-mu)/delta t

Question 8

Newton’s third law

Answer 8

If an object A exerts a force on an object B the. object B exerts an equal and opposite force on object A.

Question 9

Newton’s third law exam style question on 3 components

Answer 9

~forces applied to different objects
~equal and opposite force
~different type of force acting on different objects