A block with a mass of 2Kg is sliding on a horizontal frictionless surface with a velocity of 2.5 m/s. The block strikes a spring (K=4×10^3 N/m), Assume the impact is elastic (Both kinetic energy and momentum and conserved)
A.) What is the initial kinetic energy of the system?
B.) What is the kinetic energy of the system when the spring is compressed to x=1cm?
C.) How fast is the block moving at this point?
Draw a Picture
Draw two energy states
Find energy at these states
Set the equations equals
energy at state 1 = energy at state 2
Solve for KE2
Solve for from KE2