Question

A motorcar is moving with a velocity of 50 km/h and it takes 10 s to stop after the brakes are applied. Calculate the force exerted by the brakes on the motorcar if its mass along with the passengers is 1000 kg.
NCERT Grade XI
Chapter 9. Force and Laws of Motion
Also please mention the values of all variables as you go, for example 'acceleration = 40 km/s^2 (reason)'

Answer 1

Here's your answer,
u=50 km/hr = 13.88m/s
v=0
t=10s
m=1000kg
we know that F=m.a
so we have to find acceleration first
a=v-u/t => 1.388m/s²
Now, F=1000×1.388
F=1388N
Brainliest if helped you:-)