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A particle moving in a straight line cov...

A particle moving in a straight line covers half the distance with a speed of `3 m s^(-1)`. The other half of the distance is covered in two equal time intervals with speeds of `4.5 m s^(-1)`, and `7. 5 m s^(-1)`, respectively. Find the average speed of the particle during this motion.

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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