How much work? Given speeds and mass

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The discussion focuses on calculating the work done by an Olympic triathlete accelerating from 5 m/s to 10 m/s on a bicycle with a total mass of 105 kg. The key equation for work is identified as W = Fd, where force is derived from mass and acceleration. Participants clarify that gravitational energy is not a factor in this scenario, prompting a focus on kinetic energy changes. The solution involves calculating the difference in kinetic energy, using the formula W = ΔKE, rather than solving for distance directly. The final takeaway is that work can be determined by subtracting the initial kinetic energy from the final kinetic energy.
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Homework Statement


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


Homework Equations


W = mg\Deltad


The Attempt at a Solution


Tried solving for d, and plugging in.
 
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Your equation would apply if there was gravitational energy involved, but in this question there isn't. Work here is defined as W = Fd where F = ma.
 
But still, how would I solve for d?
 
Use kinematics to solve for a and d simultaneously.
 
W = delta(KE)

All you need to do is subtract her final kinetic energy from her initial kinetic energy to find the answer.
 

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