Question

A car moving at a speed of 90 km/hr sees an obstacle and applies brakes. It comes to a halt in 10 seconds Find the deceleration of the car in m/s^2

Answer 1

Answer:

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Explanation:

Initial velocity = u = 25 m/s (90 km/h)

Final velocity = v = 0

Time = t = 10s

By the equation s = (u+v)/2 * t

Distance traveled = (0 + 25)/2 * 10 = 125m

The car traveled 125 meters after the brakes are applied.

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Answer 2

Answer:

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Explanation:

Initial velocity = u = 25 m/s (90 km/h)

Final velocity = v = 0

Time = t = 10s

By the equation s = (u+v)/2 * t

Distance traveled = (0 + 25)/2 * 10 = 125m

The car traveled 125 meters after the brakes are applied.