When a fast moving vehicle is suddenly stopped by applying the brake, the force that causes deceleration is exerted by the brake.

True

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False

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Solution

The correct option is B
False

The force exerted by brake is an internal force for the car. Internal force can not cause deceleration. The brake's function is just to stop the rotation of the wheels. Once the rotation of the wheels is stopped, the wheels start to slip on the road. The frictional force opposes this slipping and causes deceleration. Hence, the above statement is false.

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When a fast-moving vehicle is suddenly stopped by applying brakes, the force that causes deceleration is exerted by the brake.

When a fast moving vehicle is suddenly stopped by applying the brakes, the force that causes deceleration is exerted by the brakes.

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