Murray Chambers

10/20/2023 · Elementary School

Question 21 A particle starts from the origin with a velocity \( 5 \mathrm{~cm} / \mathrm{sec} \) and moves in a straight line, its acceleration at time \( t \) seconds being \( 3 t^{2}-5 t \mathrm{~cm} / \mathrm{sec}^{2} \), what will be the velocity of the particle? \( \begin{array}{ll}\text { (a) } 28 \mathrm{~cm} / \mathrm{sec} & \text { (b) } 29 \mathrm{~cm} / \mathrm{sec} \\ \text { (c) } 30 \mathrm{~cm} / \mathrm{sec} & \text { (d) } 31 \mathrm{~cm} / \mathrm{sec}\end{array} \)