Question

Two particles A and B start at the origin O and travel in opposite directions along the circular path at constant speeds $v_A=0.7m/sand{v}_B=1.5m/s,$ respectively. Determine the time when they collide and the magnitude of the acceleration of B just before this happens.

Answer 1

$1.5t+0.7t=2\pi R=10\pi$
$t=\frac{10\pi }{2.2}=14.3s$
$a=\frac{v_B^2}{R}=0.45m/s^2$