Question

A particle is moving in a circle of radius r and a speed v .then change in velocity after the particle has travelled a distance of the circumference of the circle

Answer 1

Explanation:

Velocity is vector quantity so direction matters.

v

i

=25m/s,v

f

=−25m/s.

Δv=(−25)−25=−50m/s

Average acceleration =

Δt

Δv

=

5

50

=10ms

−2

.