Question

A boy of mass 50 kg is riding a bicycle with a speed 2 m/s. The bicycle has a mass of 10 kg . Calculate the total kinetic energy?​

Answer 1

m=50kg+10kg=60kg

v=2m/s

k=

2

1

mv

2

1/2×60×2

2

=120J

but mark me as brilliant

Answer 2

given:

mass of cycle =10 and mass of boy =50 ...10+50=60

speed which is nothing but the velocity =2m/s

Formula of kinetic energy ..

KE=1/2mv^2

=1/2*60*2^2

=1/2*60*4

=60*2

=1 20J. ..