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1.5 Kilos. Since the moon's gravity is approximately one sixth of that on the earth - divide the 9 by 6 !

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Q: What is the weight of a 9.0 kilogram bowling ball on the surface of the moon?
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Continue Learning about Astronomy

Does a bowling ball on earth have more inertia than one on the moon?

No, a bowling ball (or any other object) has exactly the same inertial mass no matter where it is (its actual inertia will, of course, depend upon its velocity as well as its inertial mass). Weight changes on the moon, but inertia doesn't.


Would a bowling ball and feather hit the ground at the same time on the moon?

No, Unless you put force behind them, neither. The lower gravity would cause them to just sit there were you let go of them. But if you did put force behind them; the bowling ball would hit the ground first, solely because of its weight and momentum.


What is the science behind the gravity of Earth?

There is a very easy analogy for how gravity works. Everything in the universe takes place within spacetime. Imagine spacetime as a trampoline. Where mass exists, spacetime becomes curved, just like a trampoline would become curved if one were to place a bowling ball on it. We as people fall down the curves made in spacetime, but the earth keeps us from falling any further, thus we are stuck to its surface. If one were to put a ping-pong ball on the trampoline, it would fall down the curve made by the bowling ball. It would stop once it hit the bowling ball, and be stuck to its surface. There are a few subtleties to this model that keep it from working perfectly, but this is basically how gravity works.


Make sentence about prediction?

my prediction about the bowling ball falling first was true.


Why do the same objects fall at the same rate?

For example take a bowling ball and a bouncy ball... Sure the bowling ball has more mass so the pull of gravity is greater on that object but this also means the surface area of the bowling ball causes air resistance thus slowing it back down. The bouncy ball on the other hand has less mass and is thus effected less by gravity but its surface area is much less so it "pierces" through the air because it has very little air resistance. Hope that helps :) Another opinion: In a vacuum all objects fall at the same rate. The only thing that causes objects to fall at different rates on Earth is their aerodynamic shape. To demonstrate this the astronauts on an Apollo moon mission (Apollo 15 maybe) dropped a feather and a hammer. They landed at the same time, because there is virtually no atmosphere on the moon. On Earth the feather would tend to "float" down, riding on air.