Solve the all parts of given question:
Question: At t=1.0s, a 0.63kg object is falling with a speed of 6.0 m/s. At t=2.0s, it has a kinetic energy of 25 J.
Part A: What is the speed of the object at t=2.0s?
Part B: How much work was done on the object between t=1.0s and t=2.0s?
Explanation and formulas needed for best answer!