Children may understand time better than adults. Raised in a world with DVDs and videos a child is keenly aware of fast forwarding slowing and reversing a video. When time slows motion slows and faster motion is seen with faster time. Time at least superficially seems to be linked to motion. However a simple thought experiment can provide further insight. Imagine a satellite orbiting a larger mass. Imagine time slowing down for this system. We expect to see that the orbital motion will be slower. However for that to happen the force keeping the two objects together in orbit will also have to get weaker. Similiarly if we imagine a faster time we will expect a faster motion and the attractive force between the two masses will have to be stronger. So time involves both motion and forces. For further info on this line of thinking visit