Question

A car with a mass of 720 kg is traveling at 43 km/hr. It accelerates to a speed of 114 km/hr in 9.4 seconds. What is the net force acting on the car?

Answer 1

the net force acting on the car is 1510.638N

Answer 2

Solution :-

deceleration = ( final velocity- intial velocity)/ time

d= ( vf-vi)/t

d= deceleration

vf = final velocity

vi = intial velocity

t = time

So deceleration is

-114 m/s x 9.4 s or -1071.6 m/s^2

now

firce = mass × acceleration

so you get force = 720 kg x 1071.6 m/s^2 or 77155 Kg m/s^2

Unit of force being

kg m/s^2

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@GauravSaxena01