a very small 51-g steel ball is released from rest and falls vertically onto a steel plate. the ball strikes the plate and is in contact with it for 0.50 ms. the ball rebounds elastically and returns to its original height. the total time interval for a round trip is 3.00 s. what is the magnitude of the average force exerted on the ball by the plate during contact with the plate?

increase masses, decrease separation

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.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

answerdmitry mendeleyev made a workable classification of the elements