Question

4 At a sports event, a champion runner and a car take part in a race. (a) The runner runs at a constant speed of 10 m/s from the start of the race. During the first 5.0 s of the race, the car's speed increases from 0 m/s to 25 m/s at a uniform rate. On Fig. 1.1, draw (i) a graph to show the motion of the runner, [1] (ii) a graph to show the motion of the car. [1] Fig. 1.1 (b) Use your graphs to determine (i) the distance travelled by the runner in the 5.0 s, distance = [1] (ii) the distance travelled by the car in the 5.0 s, distance = [2] (iii) the time at which the car overtakes the runner. time = [2] [Total: 7]

          4 At a sports event, a champion runner and a car take part in a race.
(a) The runner runs at a constant speed of 10 m/s from the start of the race. During the first 5.0 s of the race, the car's speed increases from 0 m/s to 25 m/s at a uniform rate.
On Fig. 1.1, draw
(i) a graph to show the motion of the runner,
[1]
(ii) a graph to show the motion of the car.
[1]
Fig. 1.1
(b) Use your graphs to determine
(i) the distance travelled by the runner in the 5.0 s,
distance =
[1]
(ii) the distance travelled by the car in the 5.0 s,
distance =
[2]
(iii) the time at which the car overtakes the runner.
time =
[2]
[Total: 7]

4 At a sports event, a champion runner and a car take part in a race.
(a) The runner runs at a constant speed of 10 m/s from the start of the race. During the first 5.0 s of the race, the car's speed increases from 0 m/s to 25 m/s at a uniform rate.
On Fig. 1.1, draw
(i) a graph to show the motion of the runner,
[1]
(ii) a graph to show the motion of the car.
[1]
Fig. 1.1
(b) Use your graphs to determine
(i) the distance travelled by the runner in the 5.0 s,
distance =
[1]
(ii) the distance travelled by the car in the 5.0 s,
distance =
[2]
(iii) the time at which the car overtakes the runner.
time =
[2]
[Total: 7]

Added by Lumi S.

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