Beatrice throws a stone into the air from ground level. The horizontal component of velocity is 25 m/s and it takes 3 s for the stone to reach its maximum height. Find

(a) The range of the stone.
(b) The initial vertical component of velocity.
(c) The angle of projection.


a.
dx = 142 m ; Viy = 25.4 m/s ; Ɵ = 67.50⁰



b.
dx = 142 m ; Viy = 30 m/s ; Ɵ = 70.80⁰



c.
dx = 150 m ; Viy = 20.24 m/s ; Ɵ = 70.05⁰



d.
dx = 150 m ; Viy = 29.4 m/s ; Ɵ = 78.58⁰