Question

a body of mass 500g slows down from a speed of 5m/s to 3m/s .Find the change in the kinetic energy

Answer 1

M=0.5kg v(initial)=5m/s V(final)=3m/s  

change in K.E=1/2×M×V×V-1/2×M×v×v

=1/2×0.5×9-1/2×0.5×25

=2.25-6.25

=-4kgm/ss

PLS MARK ME AS THE BRAINLIEST AS YOU WILL GET SOME EXTRA POINTS TOO !

Answer 2

1/2 m v²- 1/2mv²....use this one