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# EASY PHYSICS QUESTION PLEASE HELP?

A sports car moving at constant velocity travels 100. m in 4.0 s. If it then brakes and comes to a stop in 1.5 s, What is the magnitude of its acceleration (assumed constant) in m/s2?

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- jacob sLv 71 month agoFavorite Answer
A sports car moving at constant velocity travels 100 m in 4.0 s If it then brakes and comes to a stop in 1.5 s , what is the magnitude of its acceleration (assumed constant) in m/s2?As the car is moving at constant velocity, velocity = (total distance travelled) / (total time taken)

velocity = 100 / 4.0 = 25 m/s

as the acceleration is constant, acceleration = (final velocity - initial velocity) / time taken

= (0 - 25) / 1.5

= -16.67 m /s^2 is the acceleration(infact deceleration)

therefore, magnitude of acceleration is 16.67 m/s^2

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