Question

A car starts from rest and accelerates along a straight line path in one minute it finally attains a velocity of 40 meters/second what is the cars average acceleration

Answer 1

|Average acceleration| = (change in speed) / (time for the change)

Change in speed = (speed at the end) minus (speed at the beginning)

= (40 m/s) - ( 0 )

= 40 m/s .

|Average acceleration| = (40 m/s) / (60 sec) = 2/3 m/s² .