Question

A car
moving
with
speed 60 km/hr stops in
2 sec If mass of
car is 7 tonnes find
i) wore done by force(ii)fine applied to stop the car
(iii)acceleration.

it's urgent plz...​

Answer 1

Answer Explanation:

velocity = 60 km/ hr

time = 2 sec

mass = 7 tonnes

60 km/hr = 16.66 m/s

acceleration = velocity ÷ time

16.6 ÷ 2

= 8.3 m/s²

Distance covered = speed × Time taken

D = 16.66 × 2  

D = 33.2 m

force = mass × acceleration

7t = 7000kg

force = 7000 × 8.3

force = 58,100

work = force × distance

work = 58,100 × 33.2

= 1,928,920 J