Question

What is the work to be done to increase the velocity of a car from 30 km to 60 km if the mass of the car is 1500 kilogram?

Answer 1

sorry i am really bad in physics and that's one of the reason i joinrd brainly

Answer 2

Change in kinetic energy

m = 1500kg

u = 30km/h = 30*(5/18) m/s= 25/3 m/s

v = 60km/h = 60*(5/18) m/s = 50/3 m/s

Plug-in these values in above equations, we get

W = (0.5)(1500)(625/9)(4-1) = 156250 J = 156.25 KJ