When we try to define 'living', we look for certain distinctive characteristics of living organisms. Mention four such features.

Explain why When we try to close a watertap with our fingers, fast jets of water gush through the openings between our fingers

We have carefully distinguished between average speed and magnitude of average velocity. No such distinction is necessary when we consider instantaneous speed and magnitude of velocity The instantaneous speed is always equal to the magnitude of instantaneous velocity. Why?