Question

1) THE ACCELERATION IN THE FIRST 2 HOURS , IN THE NEXT 2 HOURS IN THE LAST TWO HOURS . 2) the total distance by the car . 3) the average speed of the car .

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Answer 1

Explanation:

1) uniform Acceleration 5m/s^2

constant acceleration 20m/s^2

retardation -5m/s^2

2) total distance = AB +BD + DE