Meriam, Kraige & Bolton — Kinematics of Particles: Problem 2_48

2/48 A particle moving in the x-y plane has a velocity at time \( t = 6 \) s given by \( 4\mathbf{i} + 5\mathbf{j} \) m/s, and at \( t = 6.1 \) s its velocity has become \( 4.3\mathbf{i} + 5.4\mathbf{j} \) m/s. Calculate the magnitude \( a_{av} \) of its average acceleration during the 0.1-s interval and the angle \( \theta \) it makes with the x-axis.