Question

an object is projected from the earth surface in vertically upward direction in such a way that it can reach upto height ( H) . then find out the ratio of its kinetic energy and potential energy when it is at a height of ( H/5 ) from the earth surface​

Answer 1

ANSWER : the answer is 4 ratio 1

Explanation: when an object is at the ground surface it has a kinetic energy equals to half MV square when it is projected to a height H by 5 it means that the total kinetic energy is now half MV square minus MGH by 5 because the kinetic energy V is converted into potential energy and potential energy will be one by v of kinetic energy when you get both the to you will get V square is equal to 5 edge but when use the first equation of motion that is V is equal to u plus 80 it will give you you is equals to root 20h so when you put the value of V in V square is equals to 5 edge the answer would come force 4 ratio 1