Physics Question

Question

A rock is thrown at 12 m/s at and angle of 60 degrees above horizontal. (use g+9.8m/s^2)

A) How high does the rock rise?

B) How long is it in the air if it falls to the same elevation at which it was thrown?

C) How far from the thrower does it land?

Answer 1

1) H = u²sin²θ/2g = 5.5 m

2) T = 2usinθ/g = 2.1 s

3) R = u²sin2θ/g = 12.7 m