A particle moves on a straight line in such way that it covers 1st half distance with speed
Channel: Doubtnut
Date: 2020-02-02

A particle moves on a straight line in such way that it covers 1st half distance with speed 3m`//`s and no half distance in 2 equal time intervals with speeds 4.5 m/s and 7.5 m`//`s respectively. Find average speed of the particle.