Newtons Laws Of Motion (Paper 2)

Question 1

First Law: Inertia

Answer 1

Every body continues in its state of rest and motion in a straight line, unless compelled to change by external forces exerted upon it

Question 2

Second Law: acceleration

Answer 2

The rate of change of momentum of a body is proportional to the force causing it and the change that takes place in the direction in which the force acts

Mass is constant
Force governs direction
Greater force = greater acceleration
GRF (Ground reaction force) 
Force = Mass x Acceleration

Question 3

Third Law: Reaction

Answer 3

To every action, there is an equal and opposite reaction force (ground reaction force)

Question 4

Scalar

Answer 4

Measurement based on size OR magnitude

Mass/Distance/Speed

Question 5

Vector

Answer 5

Measurement that has size AND direction

Question 6

Scalar quantities

Answer 6

Speed: speed = distance/time
Distance
Mass

Question 7

Vector quantities

Answer 7

Weight: mass x gravity
Velocity: displacement/time taken
Acceleration: change in velocity/time
Change in velocity: final velocity - initial velocity
Displacement: straight line joint my the start and finish points
Momentum: mass in motion/ momentum = mass x velocity