Question

calculate the height from which a body is released from rest if its velocity just before hitting the ground is 30 metre per seconds​

Answer 1

height is 45 metres

Step-by-step explanation:

KE=PE

¹/²mv² = mgh

¹/²v² = gh

but v =30m/s

(30)² / 2 =10h

450=10h

h = 45m