Fig. 1.1 shows the speed-time graph for a car travelling along a horizontal road. 30- speed m/s 25- 20 8 10 time/s Fig. 1.1 (a) On Fig. 1.1, mark and label a point where the car has a non-uniform deceleration. (b) Calculate the deceleration of the car at t = 3.0s. 2.

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Fig. 1.1 shows the speed-time graph for a car travelling along a horizontal road.
30
speed
m/s
25
20-
10
time/s
Fig. 1.1
(a) On Fig. 1.1, mark and label a point where the car has a non-uniform deceleration.
(b) Calculate the deceleration of the car at t = 3.0s.
(c) Explain, in terms of the horizontal forces that act on the car, why its speed is constant at
t = 1.0s.
-CO
Transcribed Image Text:1 Fig. 1.1 shows the speed-time graph for a car travelling along a horizontal road. 30 speed m/s 25 20- 10 time/s Fig. 1.1 (a) On Fig. 1.1, mark and label a point where the car has a non-uniform deceleration. (b) Calculate the deceleration of the car at t = 3.0s. (c) Explain, in terms of the horizontal forces that act on the car, why its speed is constant at t = 1.0s. -CO
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