Please help me. Physics assignment

' Lesson 2 6' Physics SPH4U-B A child sitting in a tree throws his apple core from where he is perched (4.0 m high) with a velocity of 5.0 m/s [35 above the horizontal|, and it hits the ground right next to his friend. a) How long is it before the apple core hits the ground? (3 marks) b) How far from the base of the tree will the apple core land? (3 marks) ) What is the velocity of the apple core on impact? (4 marks)