Question

a motorcar is moving with a velocity of 108/h and it takes
4 s to stop the brakes are applied..calculate the force exerted by the brakes on the motorcar if its mass along with the passengers is 1000 kg...​

Answer 1

Force=mass*acceleration

f=m×

t

v−u

f=1000×

4

0−108×

18

5

=1000×(−7.5)

∴f=−7500N

opposing force is denoted by negative sign.

Answer 2

Hola

Ken is offline right now

I think