Question

An object of mass 450 kg is moving with speed of 40 km/h, how much retardation is required to decrease the speed up to 15 km/h. And what will be retarding force ?​

Answer 1

heya mate use the formula

v^2-u^2=2as

and find displacement

so further u will get work....

hope it helps u ❤❤

Answer 2

Heya mate....

here is your answer

2as=V^²-U^²

Hope it helps you ‍❤️‍‍