Question

An arrow is shot from a bow at an angle of 40º from the horizontal at a speed of 24.0 m/s. Ignoring air resistance, what is the arrow’s maximum height above its launch point? 

(A) 5.9 m 

(B) 11.9 m 

(C) 16.9 m 

(D) 23.8 m 

(E) 28.8 m

Answer 1

Correct option (B) 11.9 m 

Maximum height of a projectile is found from v_y = 0 at max height and v_y² = v_iy² + 2gh and gives h_max = v_iy²/2g = (v_i sinθ)²/2g