Question

body of mass 5 kg initially at rest of subject to a force of the 20N what is the kinetic energy acquired by the body at the end of the 10 seconds

Answer 1

Given,

Mass=5 kg

Initial velocity=0

Force=20N,t=10 seconds

v=u+at

v=0+(20÷5×10)

=40

Therefore K.E=1/2(5×40×40)

=400J