A 263-kg block initially at rest at the top of a 443-m

Question

Solve the all parts of following problem given below:

Problem: A 2.63-kg block initially at rest at the top of a 4.43-m incline with a slope of 42.7° begins to slide down the incline. The upper half of the incline is frictionless, while the lower half is rough, with a coefficient of kinetic friction µk = 0.295.

Part A: How fast is the block moving midway along the incline, before entering the rough section?

Part B: How fast is the block moving at the bottom of the incline?

I need help to find how fast the block moving at the bottom of the incline.