Question

A car of mass 500 kg starts from rest and acquires a velocity of 75km/hr in 25 sec.find the force exerted on the car...

Answer 1

here is your answer

given :

mass (m) = 500 kg

initial velocity (u) = 0

final velocity (v) = 75 km/hr = 75*(5/18) = 20.83 m/s

time taken (t) = 25 seconds

to find : force exerted (f)

solution :

by using first equation of motion

v = u+at

20.83 = 0+25a

25a = 20.83

a = 0.834 m/s²

now,

force = mass*acceleration

force = 500*0.834

force = 417 Newton

so, the force exerted on the car will be 417 Newton.