- #1

chawki

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## Homework Statement

Motorcyclist (total mass 320 kg) stops from a velocity of 36km/h in 25 s without breaking.

The same motorcyclist accelerates in the same conditions from full stop to velocity of 126km/h in 6 s.

## Homework Equations

Calculate the constant forward carrying force of the engine, if the forces restricting the motion remain constant. Give the answer in 1 N precision.

## The Attempt at a Solution

all i could find out is the accelerations, a1=-0.4m/s

^{2}and a2= 0.58m/s

^{2}

and then i guess we will be interested only in a2, means only the second step of accelerating from a full stop. so F=320*0.58=185.6N

and since they asked to give the answer in 1N precision so it will be 186N.

Please tell me if i'm right