Answer
A bicyclist, Nader, moves at a constant velocity of $v_0=5\;\rm m/s$ at a bottom of a hill. Then Nader decided to move up the hill but he faces his weight component as he moves up the hill and that's why his velocity decreased at a constant rate until he reached the top of the hill.
Then he moved on the top surface of the hill at a constant speed of $v_f=2\;\rm m/s$ since he was so tired.
Work Step by Step
A bicyclist, Nader, moves at a constant velocity of $v_0=5\;\rm m/s$ at a bottom of a hill. Then Nader decided to move up the hill but he faces his weight component as he moves up the hill and that's why his velocity decreased at a constant rate until he reached the top of the hill.
Then he moved on the top surface of the hill at a constant speed of $v_f=2\;\rm m/s$ since he was so tired.
