Question

a truck of mass 100 kg is moving at 20m/s is stopped by a force. find work done

Answer 1

hey mate ur answer below

W=F.S

W=(100*9.8)*S

for distance=

u=20ms^-1

v=0

a=F/m

a=100*9.8/100

a=9.8ms^-2

using formula v^2-u^2=2as

S =400/19.6

s=20.4 m

hence,,, work = (100*9.8)20.4

980*20.4

w=1999.2 J

hope it helps!!!!!!!!!