Question

body is projected vertically up and the total distance travelled by it is s. Then total time of its flight will be​

Answer 1

Answer:

Explanation:

When body is projected against gravity the initial speed of projection is let say "u" and deceleration due to gravity is "g"

now by the formula of kinematics

now we will find the distance traveled by it till it stops

so we will have

now we can say that total distance of motion will be double of this because here the distance it will move up will be same as the distance it will come back to ground again.

from above equation we can find the speed "u"

now the total time of flight can be found similar way

when it reached to top point its velocity will become zero

now the total time of flight will be double of this time as it will take same time to come back on ground