Question

a particle describes the circle of diameter of 22 cm with uniform speed of 10cms-1. as it moves from a point x on the circle to the diametrically opp point y, find the change in its velocity

Answer 1

When a particle is moving with uniform speed along a circle

then the velocity will become opposite to the initial velocity when particle will reach at diametrically opposite point

so here we have change in velocity is given as

$\delta v = v_f - v_i$

$\delta v = 10 cm/s - (-10cm/s)$

$\delta v = 20 cm/s$

so the change in velocity of the particle is 20 cm/s