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A particle moving in a straight line cov...

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

A

K

B

zero

C

`K//4`

D

`K//2`

Text Solution

Verified by Experts

The correct Answer is:
3
`K_("highest point")=[K_("Point of projection")] cos^(2) theta`
`K_(H)=K(cos 60^(@))rArr K_(H)=K/4`
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