A child sitting in a tree throws his apple core from where he is perched (4.0m high) with a velocity of 5.0 m/s [35 degrees above horiztontal], and it hits the ground right next to his friend.
A) How long is it before the apple core hits the ground?
B) How far from the base of the tree will the apple core land?
C) What is the velocity of the apple core on impact?
part A) I used dy= Viy x t + 1/2(ay)(t)^2
part B) I used dx = (Vx)(t)
part C) I used Vf^2 = Viy^2 + 2ay(dy)
Then Pythagorean theorem to find out the final velocity and tan function to find the angle
The Attempt at a Solution
My answers were as follows:
A) 1.27 second
C) 9.9 m/s @ 65.5 degrees below horizontal
Any feedback is greatly appreciated.