Question

a stone is projected vertically upwards it takes for 4s for it to return to the point of projection find the total distance covered​

Answer 1

At H ,

KE = 0,

PE= mgh,

TE =mgh

at 3h/4 ,

PE=3mgh/4,

KE =mgh -3mgh/4=mgh/4

so PE:KE=3