Of the following, which change in motion took the greatest amount of time? A) A ball falling at 73 m/s and hitting the ground at 9.8 m/s?

B) An object speeding up from 64 m/s to 129 m/s at an acceleration of 9.8
m/s2

C) A horse slowing from a 90 m/s velocity to a 38 m/s velocity at an acceleration of 8.2 m/s2

D) A car slowing down at an acceleration of 5.6 m/s from a speed of 45 m/s to a speed of 9 m/s

the answer is b i think

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

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.

i think its c if i'm wrong