Question

the velocity of a car changes from 30 m/s to 21 m/s in 3 seconds. What is the average acceleration of the car during the time interval

Answer 1

Answer:

u=30m/s

v=21m/s

t=3s

a=v-u/t

a=21-30/3

a=-9/3

a= -3m/s^2

Answer 2

Explanation:

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