Answer:
Energy can transfer (convert) from one form to other.
Explanation:
Law of Conservation of Energy : It states that energy can neither be created nor destroyed in a chemical reaction but can be converted from one from to another.
Potential Energy(P.E) : Energy possessed by the object due to its position and size.Near the ground it attains zero value or close to it.
Kinetic Energy(K.E) : The energy possessed by the object due to its speed .When the object is in motion it has kinetic energy
For example :
When a stone is placed (rest) at some height on the top of the building . It has only potential energy .The potential energy at this point is calculated by
P = mgh
Now , when the the stone is released. It falls to the ground . During its motion towards the ground , its speed increases but the distance of stone from the ground decreases .
Hence the Object in between the ground and building has both K.E and P.E
K.E + P.E = mgh + 1/2 mv^2
If the object reaches just near the ground. Its kinetic energy is maximum but potential energy is almost zero . So at this point ,
K.E = 1/2 mv^2
Hence the Same potential energy is converted into kinetic energy while reaching the ground .
The object itself has not created the energy in between the motion.Neither its energy goes to zero.
