A 4kg watermelon is dropped from a height of 45m. What is the velocity of the watermelon just before it hits the ground?

v=30 m/s

Explanation:

h - height

g - acceleration due to gravity=10

t - time

v- velocity

45 = 5t²

t² = 9

t=3 seconds

v=g×t

v=10×3

v=30 m/s

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.