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If a car goes in a northward direction when the driver applies brakes, then what is the direction of its acceleration?

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North

South

East

West

answer is B.

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Detailed Solution

If a car goes in a northward direction when the driver applies brakes then south is the direction of its acceleration.
Acceleration has defined as a rate of change of velocity. So, the car is moving in along northward direction. However, if the driver applies the brakes, then the direction of acceleration is opposite to the direction of motion of the vehicle because the velocity is decreasing. So, the acceleration direction is towards the south.

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