Physics

Problem

3.18 A particle starts from the origin at

t=0 \mathrm{~s}

with a velocity of

10.0 \hat{\mathbf{j}} \mathrm{~m} / \mathrm{s}

and moves in the

x-y

plane with a constant acceleration of

(8.0 \hat{\mathbf{i}}+2.0 \hat{\mathbf{j}}) \mathrm{m} \mathrm{s}^{-2}

. (a) At what time is the

x

-coordinate of the particle 16 m ? What is the

y

-coordinate of the particle at that time? (b) What is the speed of the particle at the time ?