Work, Power and Energy

According to the data provided, how much work does the weight do?

F = 40 N, Fk = 10 N, m= 3 kg, x= 8 m

An object of 2.03 kg is thrown vertically upwards at an initial speed of 10.41 m/s. What is the kinetic energy at the moment it is thrown?

An object of mass 0.328 kg moves along a straight path at a constant velocity.  If the kinetic energy is 14.7 J, determine the speed of the object.

A 0.050 kg stone is dropped from a height of 15.67 m.  What is the potential energy at the instant of release?

A 4.3 kg box on a platform has a potential energy of 349 J.  Determine the height of the platform.

An object held at a height of 3.7 m has a potential energy of 209 J.  What is the mass of the object?

A box of mass 4.04 kg is thrown vertically downwards with a speed of 7.92 m/s from a height of 11.44 m.  How much mechanical energy does the box have?

When an object is dropped from a certain height it has a potential energy of 396J.  How much mechanical energy does the object have falling to half its original height?

A bag of 204 g is thrown vertically upwards with a speed of 8 m/s.  What is the potential energy of the bag reaching maximum height?

​A ball of mass 220g falls freely from a table of height 57.8 cm. At what speed does the ball hit the ground?