1.

A ball is thrown vertically upwards with the speed of 19.6 ms^(-1) from the top of building and reaches the earth in 6 s. Find the height of the building .

Answer»

Solution :Using `s=ut+(1)/(2)at^(2)`
`-h=19.6xx6+(1)/(2)XX(-9.8)xx(6)^(2)`
h=58.8m


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