Thursday
July 24, 2014

Homework Help: Physics

Posted by Long on Wednesday, June 18, 2014 at 11:05pm.

Consider a car starting at rest at the beginning of a 250 m street. At time t = 2.0 s it is 20 m along the street. At time t = 4.0 s it is 80 m along the street. Find its average velocity in the:
(a) First 2.0 s (b) First 4.0 s (c) Last 2.0 s
My work:
I have done 2 question a and b and got the answer 10m/s and 20m/s respectively. However, i do not know how to explain and solve the last question. It is great If someone can help me to understand the last question.

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