An ice block is projected vertically up with a velocity 20 `ms^(-1)`. The amount of ice that melt when it reaches the ground and if the loss of P.E. is converted into heat energy if the mass of ice block is 4.2 kgA. 2.5gmB. 2.5kgC. 0.25kgD. 0.25gm

An ice block is projected vertically up with a velocity 20 `ms^(-1)`.

1.	An ice block is projected vertically up with a velocity 20 `ms^(-1)`. The amount of ice that melt when it reaches the ground and if the loss of P.E. is converted into heat energy if the mass of ice block is 4.2 kgA. 2.5gmB. 2.5kgC. 0.25kgD. 0.25gm
Answer» Correct Answer - A Maximum height attained, `h=(u^(2))/(2g)` `W=JHrArrmgh=J(xL_("ice"))`

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An ice block is projected vertically up with a velocity 20 `ms^(-1)`. The amount of ice that melt when it reaches the ground and if the loss of P.E. is converted into heat energy if the mass of ice block is 4.2 kgA. 2.5gmB. 2.5kgC. 0.25kgD. 0.25gm

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