An object of mass m is moving with a constant velocity v.how much work

1.	An object of mass m is moving with a constant velocity v.how much work should be done on the object to bring it to the rest?
Answer» Answer: the OBJECT is in motion ,so its energy = kinetic energy = 1/2 mv^2 the kinetic energy of the object ,when it comes to REST = 0 work DONE on object = CHANGE in kinetic energy = 1/2mv^2 - 0 = 1/2 mv^2

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

Answer»

Answer:

the OBJECT is in motion ,so its energy = kinetic energy = 1/2 mv^2

the kinetic energy of the object ,when it comes to REST = 0

work DONE on object = CHANGE in kinetic energy

= 1/2mv^2 - 0

= 1/2 mv^2