A ball is projected with a velocity, 10 ms^-1, at an angle of 60° with the vertical direction. Its speed at the highest point of its trajectory will be:
(1) 5 ms^-1
(2) 10 ms^-1
(3) zero
(4) 5√3 ms^-1
(1) 5 ms^-1
(2) 10 ms^-1
(3) zero
(4) 5√3 ms^-1