A car is driving at a speed of 50 m/s. After 6 seconds he notices a wreck up ahead and slows down to 20 m/s. What is his acceleration

the acceleration of the car is -5 m/s².

Explanation:

Given;

initial velocity of the car, u = 50 m/s

time of motion, t = 6 s

final velocity of the car, v = 20 m/s

The acceleration of the car is calculated as;

Therefore, the acceleration  of the car is -5 m/s².

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