Question

A particle is projected with a speed of 40 m/s at an angle of 60° with the horizontal. At what height speed of particle becomes half of initial speed (g = 10m/s²). 

(a) 30 m 

(b) 45 m 

(c) 37.5 m 

(d) 60 m

Answer 1

Correct option (d)

Explanation:

At maximum height speed becomes half of initial speed,