An object of mass, m is moving with a constant velocity, v. How much w

1.	An object of mass, m is moving with a constant velocity, v. How much work should be done on the object in order to bring the object to rest?
Answer» The work done on the object to bring the object to rest = change in kinetic energy = Final kinetic energy – Initial Kinetic energy Here final kinetic energy is zero because the object is brought to rest. = 0 - \(\frac{1}{2}\)mv² = -\(\frac{1}{2}\)mv²

An object of mass, m is moving with a constant velocity, v. How much work should be done on the object in order to bring the object to rest?

Answer»

The work done on the object to bring the object to rest

= change in kinetic energy

= Final kinetic energy – Initial Kinetic energy

Here final kinetic energy is zero because the object is brought to rest.

= 0 - \(\frac{1}{2}\)mv²

= -\(\frac{1}{2}\)mv²