Chapter 3

Question 1

What is distance?

Answer 1

The length of the path travelled between 2 points

Question 2

What is speed?

Answer 2

Distance travelled per unit time. It is the magnitude of the velocity vector

Question 3

What is acceleration?

Answer 3

Rate of change of velocity

Question 4

What is displacement

Answer 4

Length of the shortest path between 2 points according to direction

Question 5

What is velocity?

Answer 5

Rate of change of displacement

Question 6

What is uniform acceleration?

Answer 6

When speed changes at a constant rate

Question 7

Suvat equation without displacement

Answer 7

V=u+at

Question 8

Suvat equation without final velocity

Answer 8

S=ut+0.5at^2

Question 9

What is the Suvat equation without a?

Answer 9

S=0.5(u+v)*t

Question 10

Equation without t

Answer 10

V^2=U^2+2as

Question 11

What is the thinking distance?

Answer 11

Distance car travels whilst driver is reacting

Question 12

What is braking distance?

Answer 12

Distance car travels whilst driver applies the breaks

Question 13

What is stopping distance?

Answer 13

Thinking distance+Braking distance

Question 14

How to calculate thinking distance and breaking distance?

Answer 14

Thinking distance=speed*reaction time

Braking distance-Suvat equations

Question 15

Factors which affect driver

Answer 15

Tiredness
Alcohol
Drugs
Distraction

Question 16

Factors which affect cars

Answer 16

Weather
Worn tyres
Faulty breaks
Badly maintained roads

Question 17

What are the 2 forces acting when a body falls through?

Answer 17

Weight and drag