Isaac newton’s investigations of gravity explained which of the following?

a. earth is not the center of the universe.

b. jupiter has more moons than earth.

c. gravity acts on all objects in the universe.

d. the sun is more massive than earth.

16. a brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 n on him. the mass of the losing player plus equipment is 90.0 kg, and he is accelerating at 1.20m/s2 size 12{1 "." "20"" m/s" rsup { size 8{2} } } {} backward. (a) what is the force of friction between the losing player’s feet and the grass? (b) what force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg? (c) draw a sketch of the situation showing the system of interest used to solve each part. for this situation, draw a free-body diagram and write the net force equation.

What is the largest meteoroid that has collided with this planet

What is the answer to these problems 30 pt