Question

A car of mass 1500kg is moving with the speed of 90km/Hr. Calculate the amount of force applied to bring it at rest in 5 seconds.​

Answer 1

Explanation:

Newton 2nd law

Force=mass×acceleration

Force=m×(v/t)

Here m=1500kg V=90km/hr=90×5/18=25m/sec.

Time=5 sec

Force=1500×(25/5)=7500N

Hope it helps you

Happy New year✌

Kindly rate and like if you like the answer

Answer 2

Force=mass×acceleration

as acceleration =speed/time

speed=90km/hr

=90×1000/3600

=25m/sec

acceleration=25/5

=5 m/ s²

Force=1500×5

=7500N