Forces

Question 0

When stopping a car what can affect the thinking time?

Answer 0

Drugs/alchohol
Distractions
Tiredness

Question 1

What do unbalanced forces do to the movement of an object?

Answer 1

Cause the object to either speed up or slow down

Question 2

When stopping a car what can affect the breaking distance?

Answer 2

Tyres
Brakes
Speed
Weather 
Road surface

Question 3

What is momentum and what affects it?

Answer 3

Momentum is how quickly each kg of the object is moving - objects with a greater momentum are harder to stop

Momentum is affected by mass and velocity

Question 4

All objects with elastic potential energy are all able to do what?

Answer 4

Return to their original shape

Question 5

What safety features do you find in cars to help reduce to momentum of a crash?

Answer 5

Seat belts
Crumple zones
Air bags

Question 6

Safety features of a car are designed to do what?

Answer 6

Increase the time taken to slow the passenger down

Question 7

When are the forces of an object unbalanced?

Answer 7

When it is still or travelling at a steady speed

Question 8

What is hooke’s law?

Answer 8

Extension of an elastic object is directly proportional to force