Answer to Question #156484 in Physics for Syed Adeel Hussain Shah

Question

A particle moves along x-axis.Does kinetic energy of the particle increases decreases or remains the same if it's velocity changes.

1) From-3m/s to -2m/s

2)From -2m/s to 2m/s

Answer 1

Kinetic energy $KE=\frac{mv^2}{2}$

1) kinetic energy of the particle decreases;

2) kinetic energy of the particle remains the same.