Physics

Problem

An object is projected from ground level with initial speed

20\,\text{m s}^{-1}

at an angle of

30^{\circ}

above the horizontal. Take

g = 9.8\,\text{m s}^{-2}

. a. (i) Calculate its horizontal displacement after

1.5\,\text{s}

. b. (ii) Calculate its vertical displacement after the same time.