a car starts from rest and accelerates uniformly for 20 seconds to attend a speed of 25 km per second it maintains the speed for 30 seconds before decelerating uniformly to rest total time for journey in 60 Seconds​

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.

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this