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A popular game in Indian villages is gol...

A popular game in Indian villages is goli which is played with small glass balls called golis. The goli of one player is situatted at a distance of 2.0 m from the goli of the second player. This second player has to project his goli by keeping the thumb of the left hand at the place of his goli, holding the goli between his two middlefilngers and making the throw. If he projected is 19.6 cm from the ground and the goli is to be projected horizontally, with what speed shold it be projected so that it directly hits the stationary goli without falling on the ground earlier?

Text Solution

Verified by Experts

The goli moves like a projectivel.
Here, h= 0.196 m ltbgt Horizontal distance , x= 2m
Acceleration, g= 9.8 m/s^2
Time to reach the ground
`t= sqrt(2h)/g= sqrt(2xx0.196)/9.8)
`= 0.4=0.2 sec`
Let horizontal velocity with which it is projected be u m/s

`:.=x=ut
`x=ut`
rarr = (x/t)= (2/0.2)= 10 m/s`
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