Saturday

October 25, 2014

October 25, 2014

Posted by **Physicster** on Saturday, March 13, 2010 at 9:43pm.

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 -
**bobpursley**, Saturday, March 13, 2010 at 9:46pmaverage velocity= 13.5m/s * 1/2

distance= avgvelocity*time

force*distance= initial KE

solve for force.

**Answer this Question**

**Related Questions**

Physics - A 70 kg bicyclist rides his 7.8 kg bicycle with a speed of 14 m/s. How...

Physics - A bicyclist is coasting straight down a hill at a constant speed. The ...

Physics - A bicyclist is coasting straight down a hill at a constant speed. The ...

physics - a bicyclist is finishing his repair of a flat tire when a friend rides...

physics( PLEASE READ) - a bicyclist is finishing his repair of a flat tire when ...

physics - A bicyclist makes a trip that consists of three parts, each in the ...

chem - a cyclist rides a bicycle at an average speed 24 miles per hour. If she ...

phyics (PLEASE PLEASE READ) - a bicyclist is finishing his repair of a flat tire...

physics - A bicyclist makes a trip that consists of three parts, each in the ...

physics - A bicyclist makes a trip that consists of three parts, each in the ...