1.

A ball throuwn vertically upwards with a speed of 19.6ms^(-1) from the top of a tower returns to the earth in 6s. Find the height of the tower.

Answer»

Solution :using`s= UT+(1)/(2) at^(2)`
`-h=19.6 xx 6+(1)/(2)xx(-9.8)xx62`
`h=58.8`m.


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