If a planet is twice as far from the sun at aphelion than at perihelion, then the strength of the gravitational force at aphelion will be is at a) four times as much b) twice as much c) the same d) one half as much

The correct option is not given here, which is

e) One quarter as much.

Explanation:

According to the newton's law of gravitation,

So the gravitational force is inversely proportional to square of distance between the sun and planet. If a planet is twice as far from the sun at aphelion than at perihelion then the strength of the gravitational force at aphelion will be quarter the force at perihelion.

choosing tennis and golf balls is your inde choice.

their mass and volume are dep

it is called kinetic energy