A 1.5 kg cart moves on a smooth horizontal track with initial velocity m s⁻¹

PHYSICS · Subjective · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

A 1.5 kg cart moves on a smooth horizontal track with initial velocity

\mathbf{u}=4\,\hat{i}+0\,\hat{j}

m s⁻¹. A constant horizontal force

\mathbf{F}=3\,\hat{j}

N acts on the cart for 5 s. Determine: (i) its final velocity vector

\mathbf{v}

, (ii) the magnitude of its final speed.