Homework Help: College Physics!!!

Posted by Steph on Monday, October 6, 2008 at 10:07pm.

A truck on a straight road starts from rest accelerating at 2.0 m/s2 until it reaches a speed of 20 m/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 5.0 s. What is the average velocity of the truck for the motion described?

College Physics!!! - drwls, Monday, October 6, 2008 at 10:18pm
Add up the distances travelled during the acceleration, constant-velocity, and deceleration phases of the journey. Then divide that total distance travelled by the elapsed time (10 + 20 + 5 s) to get the average velocity. If you need additional help, show your worka and it will be provided.
College Physics!!! - Anonymous, Sunday, June 3, 2012 at 12:18pm
s=3+4

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