As per Einstein space is flexible it means it can be curved with mass but I am not able to visualize the relationship between space and time (space-time continuum).
According to Newton Apple falls because earth pulls the apple towards it and it is easy to visualize but As per Einstein Apple remains at that place but time passes so it appears to be falling(how can I visualize the same)?
*The answer is simplified by starting small, very small. Imagine you are an atom, the old fashion hydrogen atom with a single electron. You use your circulating electron as a clock, and the clock ticks every time the electron circulates. Easy. But now you begin to speed up, faster and faster (either by acceleration or because you are in greater and greater gravity). As you speed up, the electron circulating around you must make a larger, more elliptic orbit. Since the electron's speed stays the same, your clock must slow down. It takes longer for the electron to orbit. You may not notice a big change until you get very, very fast, near the speed of light. Since the electron orbits at less than the speed of light, it would take longer and longer for the electron to orbit, and your electron clock would slow more and more, and time would slow down for you. In addition all the electrons and atomic material in you (the rest of the atom) would take larger orbits and thus slow down also, so you would not notice anything amiss, as time slowed compare to your original reference time. Think of gravity (acceleration) as adding distance to all the elemental movements in your atomic self (or in an apple), and you can understand the relationship between gravity (acceleration, speed) and time. *