A projectile is launched from level ground and returns to the same level

PHYSICS · Subjective · CBSE · Physics · Motion in a Plane · Motion in a Plane

Problem

A projectile is launched from level ground and returns to the same level. Its horizontal range is

120\,\text{m}

when the angle of projection is

30^\circ

. Take

g = 10\,\text{m}\,\text{s}^{-2}

. Determine its initial speed.