Question

A boat is moving at a rate of 15.0 meters per second. It’s speed is then decreased uniformly to 3.0 meters per second. It takes 4 seconds for the speed to decrease.what is the magnitude of the deceleration of the car

Answer 1

Initial velocity (u) = 15m/s

Final velocity (v) = 3m/s

time taken = 4s

Acceleration = v-u/t = 3-15/4 = -12/4 = -3m/s²

Acceleration of the car = -3ms-²

Deceleration of the car = 3ms-²

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