Unit: Kinematics

A student climbs to the roof of his house, 50.0 meters above the ground, and launches his physics book with an initial velocity of 20.0 m/s at an angle of 80.0 to the the horizontal.

a) Sketch the situation. b) Determine the maximum height reached by the physics book. c) Determine how long the book stayed in the air. d) Determine the range of the physics book. e) Determine the vector velocity of the book just before it hits the ground.

Please help