Answers

2016-02-20T06:31:31+05:30
Mass =250 kg
Velocity = 18km/h = 18 x 1000/60 x 60 = 5 m/s
v=1/2.m.v^2
here, (1/2) m v^2 = (1/2)(250) * 25 = 3125J
 to counter back this force, we need an equal and opposite force
Therefore the Work needed = 3125J
 

0