A particle moving in a straight line covers half the distance with speed of $$3$$ $$m/s$$. The other half of the distance is covered in two equal time intervals with speed of $$4.5$$ $$m/s$$ and $$7.5$$ $$m/s$$ respectively. The average speed of the particle during this motion is :

Question

Infinity Learn · Accepted Answer

$$t1$$ $$=$$ $$x23$$ $$=$$ $$x6$$, $$x1$$ $$=$$ $$4.5t2$$, $$x2$$ $$=$$ $$7.5t2Also$$ $$x1+x2$$ $$=$$ $$x2=$$ $$(4.5+7.5)t2That$$ is $$t2$$ $$=$$ $$x24Total$$ time t $$=$$ $$t1$$ $$+$$ $$2t2$$ $$=$$ $$x6+2x24$$ $$=$$ $$x4vavg$$ $$=$$ xt $$=$$ $$4$$ $$m/s$$

A particle moving in a straight line covers half the distance with speed of 3 m/s. The other half of the distance is covered in two equal time intervals with speed of 4.5 m/s and 7.5 m/s respectively. The average speed of the particle during this motion is :

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