A ball moving along the vertical -axis has velocity at a certain instant (upward is…

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

Problem

A ball moving along the vertical

y

-axis has velocity

v_y=-9.6\,\text{m/s}

at a certain instant (upward is taken as the positive

y

-direction). Is this velocity a scalar or a vector? Briefly justify your answer.