please check this Physics
posted by Kelsey .
A 5kg block slides along a frictionless surface at 8 m/s toward a second block that is 2kg and attached to the end of a spring,The spring has a constant of 250N/m . When the blocks collide they stick together.
What is the speed of the two blocks immediately after the collision?
What impulse is given to the first block during the collision?
How far will the spring compress?
What is the maximum speed they will attain once they begin oscillating on the spring?