A rocket rises vertically from the earth's surface such that its distance from the surface is l=ct². After 10 s it has travelled 2 km. Find its speed at that moment, in m s⁻¹.

Physics · Kinematics Part-1 (one dimension) · Motion under gravity

JEE MainsJEE Advanced

A rocket rises vertically from the earth's surface such that its distance from the surface is l=ct². After 10 s it has travelled 2 km. Find its speed at that moment, in m s⁻¹.