Question

Four balls A, B, C and D are projected with the same speed
making angles of 10°, 30°, 45°, 60° respectively with the
horizontal. Which ball will strike the ground at the farthest
point?​

Answer 1

The ball making the lowest angle will strike the ground fastest at it has more velocity in the x component than the y component

Answer 2

Answer:

then answer is 60 as range could be formalised as

$( {v}^{2} ) \times \sin(2 \alpha ) \div g$

therefore sin 2alpha is maximum in 60°