# A spring with a constant of #6# #kgs^-2# is lying on the ground with one end attached to a wall. An object with a mass of #7# # kg# and speed of #2# #ms^-1# collides with and compresses the spring until it stops moving. How much will the spring compress?

##### 1 Answer

Apr 28, 2016

When the initial kinetic energy,

#### Explanation:

The kinetic energy of the moving mass will be converted to spring potential energy.

Initial kinetic energy:

Final spring potential energy:

Rearranging: