Motion

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Question 13

Medium

The graph shows how the velocity of a car changes when the driver sees a hazard in the road at time $t = 0$ seconds.

Velocity-time graph with velocity on the vertical axis and time on the horizontal axis. The axis of time is labeled from 0 to 6 seconds with grid lines indicating every 0.1 seconds. The initial velocity at t = 0 is u m/s. The velocity remains constant at u m/s from t = 0 s to t = 1.5 s. The velocity then decreases linearly from u m/s at t = 1.5 s to 0 m/s at t = 5.5 s.

The braking distance is $m40\text{ m}$ .

Calculate the initial velocity $u$ of the car.

Use the graph.

[3]

Motion

Question 13

Motion Questions

Motion

Question 13

Motion Questions