So it takes ugsecs to go up, how long will it take to come down?(as mentioned there is no air)
shorter than because in the previous case gravity is acting against velocity and here it is acting along the velocity
I don't know
Time of ascent is equal to time of descent. Hey, think for a minute, then proceed to the next video for the solution!
It is said that there is no shield found which can stop gravity acting. But there is a force called centripetal force which acts between planets so that they don't bump into each other. So is'nt it that centripetal force is a shield to gravity?