A 0.150 block moving vertically upward collides with a light vertical spring and compresses it 4.50 before coming to rest. If the spring constant is 54.0 , what was the initial speed of the block? (Ignore energy losses to sound and other factors during the collision.)

1 answer

You need to include the units of Mass, distance (compression) and spring constant. Just listing numbers is not enough.

Are they kg, meters and Newtons/meter?