Post a New Question

Physics

posted by .

A 64 kg bicyclist rides his 7.7 kg bicycle with a speed of 13.5 m/s.

How much work must be done by the brakes to bring the bike and rider to a stop?

How far does the bicycle travel if it takes 4.5 s to come to rest?

What is the magnitude of the braking force?

I know the work in the first question is -6.43366 kJ but I have no idea how to find the distance and force.

  • Physics -

    average velocity= 13.5m/s * 1/2
    distance= avgvelocity*time

    force*distance= initial KE
    solve for force.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question