A piece of marble is projected from earth's surface with velocity of 50 m/s. 2 seconds later, it just clears a wall 5 m high. What is the angle of projection

Question

anonymous · Answer

Maybe you could make a triangle out of it so 2 seconds it barely clears the wall so the hyp is 100m and the opposite side from the angle is 5m  and use inverse sin to find the angle so oppo/hyp 5/100, I got 2.87 degrees that seems a little small though...

anonymous · Answer

|dw:1333208034298:dw| heres a picture