a person tries to move a heavy stone of mass 100 kg for an hour but fails (a).How much work has to be done on the stone?(b).if instead ,he ,lifts lifts it up to a height of 2m , how much work is done

if they have a finite resultant

the given statement is true.

sensory memory lasts for a fraction of seconds before the information is lost. it is the shortest -term memory and can be called as an element of memory. example: when we look at something and remember what it looks like, is just a second of observation. it degrades very quickly. it can also be considered as the process of perception rather than considering it as a memory.