P5 Forces and Motion

Question 1

Definition

Distance
Displacement

Answer 1

Distance-How far an object has moved and doesnt involve direction. Scalar
Displacement-Measures distance and direction in a straight line from an objects starting point to their end.

Question 2

Equation and definiton

Acceleration

Answer 2

Acceleration is the change in velocity in a certain amount of time.
a= Change in velocity/time

Question 3

Uniform acceleration

Answer 3

v^2 - u^2= 2as

Question 4

Newtons 1st/2nd/3rd law

Answer 4

1-An object will remain at rest or constant velocity unless acted upon by a resultant force
2-A resultant force will cause an object to acclerate
3-Action and reaction are equal and opposite

Question 5

Terminal velocity

Answer 5

The final velocity you can reach in the air as there is less air resistance.

Question 6

Factors affecting
Thinking distance
Braking distance

Answer 6

Thinking-Tiredness/Drugs/Alcohol
Braking-COndition of brakes/tyres mass of car

Question 7

Momentum equation

Answer 7

P=m x v

Question 8

Stopping distance

Answer 8

This is the distance it takes to stop and is
Stopping=Thinking+braking

Question 9

Rules of momentum in a close system

Answer 9

Momentum before an event=Momentum after an event