Question

Find acceleration force work done when mass is 4kg initial velocity zero metre per second final velocity 16 m per second time taken 4 second distance travel 20 m

Answer 1

u=0 m/s
v=16 m/s
s=20 m
t=4 s
m=4kg

s=ut+1/2 at^2
20=0+1/2*a*4*4
20=8a
20/8=a
a=2.5m/s^2

F= m*a
=4*2.5
=10N
Work = Force* Distance
=10*20
=200J