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Kinetic energy bicycle problem

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12
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1. Homework Statement
How much work is done by an Olympic triathlete who accelerates herself on her bicycle (combined mass of 105kg) from 5 m/s to 10 m/s?


2. Homework Equations
Ek = 1/2mv^2
W = Fapp(d)


3. The Attempt at a Solution
Ek = 1/2m[(5 + 10)/2]^2

how do i go about solving this?
 

Answers and Replies

Nabeshin
Science Advisor
2,204
16
Work is the change in energy of an object. So how much did she start with, and how much did she end up with.
 
279
0
Is the answer 3937.5 joules?
 

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