Question

A car moving at 40 km/h is to be stopped by applying brakes in the next 4.0 m is the curve at 2000 kg what average force must be applied on it

Answer 1

First, I used the expression

$v { }^{2} - u {}^{2} = 2as$

to calculate Acceleration.

then I used

$f \: = ma$

To calculate force