Physics on the move

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Question 11
Medium

The graph shows the thinking and braking distances for an electric scooter at different speeds.

A line graph showing thinking distance and braking distance versus speed for an electric scooter. The x-axis is labeled 'Speed (m/s)' and ranges from 0 to 30, with gridlines every 1 m/s and major labels every 5 m/s. The y-axis is labeled 'Distance (m)' and ranges from 0 to 60, with gridlines every 1 m and major labels every 10 m. There are two curves starting at (0,0): 1. Thinking distance (thick straight line) which passes through (0, 0), (10, 8), (15, 12), (20, 16), and (25, 20). 2. Braking distance (thin curve curving upwards) which passes through (0, 0), (5, 2), (10, 8), (15, 18), (20, 32), and (25, 50).

a.

Describe how thinking distance varies with increasing speed. Use data from the graph to support your answer.

[2]
b.

Use the graph to find the thinking distance at 15 m/s15 \text{ m/s}15 m/s.

[1]
c.

Calculate the thinking time (reaction time) at 15 m/s15 \text{ m/s}15 m/s. Use the equation: distance travelled=speed×time\text{distance travelled} = \text{speed} \times \text{time}distance travelled=speed×time Give your answer to 2 decimal places.

[2]
d.

State one factor that could increase thinking distance.

[1]
e.

Calculate the stopping distance at 20 m/s20 \text{ m/s}20 m/s. Use the graph to help you.

[2]
f.

How does the speed affect the kinetic energy and braking distance of the electric scooter? Use the graph to support your answer.

[3]

Physics on the move Questions

  1. GCSE
  2. /Physics
  3. /Physics on the move