A small stone is projected vertically upward from ground level

PHYSICS · Subjective · CBSE · Physics · Gravitation · Gravitation

Problem

A small stone is projected vertically upward from ground level. Two seconds after projection its speed is measured to be

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

upward. (i) Write the values (with signs) of

v

t

and

g

that are involved at this instant. (ii) Select the kinematic equation that directly relates these quantities with the initial speed

u

, and hence determine

u

. (iii) Using the value of

u

obtained in part (ii), determine the maximum height reached by the stone above the point of projection.