Calculating Braking Force - GCSE Physics | kayscience.com

Work done is the energy transferred when a force moves an object through a distance.

Work done is the same as saying energy transferred. When you push, pull, or lift something, you are overcoming frictional forces such as friction or the object’s weight due to gravity.

The formula that links work done, force applied to an object and distance is:

work done = force x distance

The unit for work done is joules ( J )
The unit for force is newtons ( N )
The unit for distance is metres ( m )

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[goranmalmsten]

Red marks indicate that braking occurs in disks and pads. So the wheels must be rotating. Those forces can not be calculated. They are not pointing backwards, they are not working along a distance of 10 meters and they are not working ON the car. Those forces are working INSIDE the car. "Simple" laws with forces can not be used on vehicles with rolling wheels.

[meonjeo]

Can anyone solve this ?
Find the stoping distance if Vehicles weight = 300kg
Speed 40km/hr
Coefficient of friction of ground =0.8
Wheel dia= 566mm
Width =177mm
Consider all wheels locked

[goranmalmsten]

Calculations are valid only for a car with locked wheeis.