A truck on a straight road starts from rest, accelerating at 2.00m/s^2 until it reaches a speed of 20.0m/s. Then the truck travels for 20.s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.00s.
a) How long is the truck in motion?
b) What is the average velocity of the truck for the motion described?
Constant acceleration equations
average speed formula
The Attempt at a Solution
vfinal=vinitial + at
Now this is incorrect but can someone tell me the correct way of doing this problem?