Solve the all parts of given question:
Question: The top speed of a tortoise on the ground is 5 mph. Morris, the tortoise, being in top physical shape, propels himself off of a horizontal cliff top which is 8 m above Loch Ness in the highlands of Scotland.
Part A: How far does Morris travel horizontally before he goes swimming with Nessie?
Part B: What is the magnitude and direction of the velocity of Morris as he enters the water?
Please do a step by step solution since I'm kind of lost with this question.