Movement and position

Question 1

What do distance-time graphs show?

Answer 1

how far away a object is from the base position compared to the time taken to reach there. Straight line shows constant speed.

Question 2

What is Velocity?

Answer 2

The increase in displacement/time

Question 3

What is acceleration?

Answer 3

Change in velocity / Time

Question 4

What is the formula for acceleration?

Answer 4

a = (v-u) / t

Question 5

What do Velocity time graphs show?

Answer 5

the speed of an object at that time. Level line shows constant speed. Gradient of straight line shows acceleration. Area under graph shows distance travelled

Question 6

What is the equation for speed?

Answer 6

s = d/t

Question 7

What is the equation for velocity?

Answer 7

v = d/t

Question 8

When an unbalanced force acts on an object along/against the line in which the object is moving

Answer 8

The object will accelerate/decelerate

Question 9

The bigger the unbalanced force

Answer 9

The bigger the acceleration

Question 10

Force =

Answer 10

mass x acceleration (F=ma)

Question 11

Stopping distance

Answer 11

Sum of the thinking distance and braking distance

Question 12

Thinking distance and factors that affect it

Answer 12

The thinking distance is the time before the brakes are applied. It can be affected by tiredness, drugs and poor visibility. Distance travelled depends on the speed of the vehicle.

Question 13

Braking distance and factors that affect it

Answer 13

The distance travelled after the brakes have been applied. It is affected by brake and tire condition and the condition of the road surface.