A 1 kg tennis ball and 4 kg basketball are dropped from the same height at the same time. They both hit the floor at the same time. This proves that

A
The force of gravity between the basketball and Earth is equal to the force of gravity between the tennis ball and the Earth

B
The force of gravity between the basketball and Earth is greater than the force of gravity between the tennis ball and the Earth.

C
The force of gravity between the basketball and Earth is less than the force of gravity between the tennis ball and the Earth

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j

Ithink it’s b hope it

If element x has 21 protons, element x has 21 electrons