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-1

I believe the Earths Inertia would prevent any of the other 3 objects from moving it. Their Gravity can not overcome the Earths inertia. Therefore The Earth stay's where it is and the 3 land at exactly the same moment.


2

I think as time goes on, the layer on the down part of the hourglass becomes thicker. So as the result of free fall, each next grain will have less velocity as it has come a lesser distance.So as we consider that each grain stops after hitting the bottom, the amount of impact of each grain decreases.So at first, the scale will show a great (comparing to ...


1

Two issues: 1) the equation was derived assuming that the initial speeds were zero, so both masses started at rest. To get a more general expresion yuo need to integrate again (I'll check later if this is easily doable) 2) you can apply this equation in 3d, the equatiosn assumes that the masses start at rest and follow a staight path until they collide. ...


2

1) What is the initial position of the bannana? 2) invent an initial position for the shooter. 3) at time 0, what is the direction of the bullet's velocity? 4) Now, set up a system of equations for the bullet and the bannana's motion. 5) do they hit each other?


0

If you assume that the earth is immobile, the fall time if the same. If you consider that the earth moves because of the mass of the item, yes, the heavy item fall time is shorter (infinitesimal difference). If both items are dropped at the same time, they will hit the floor at the same time though. (This question has already be answered : Don't heavier ...


2

Clearly missed the point in this statement. For both the 1000kg and 1kg masses, the product of them both with the earth's mass is clearly the earth's mass, so F will be virtually the same for them both. The product is definitely not the same and the force on 1000kg ball is exactly 1000 times greater that the force on 1kg ball and much much more on the ...



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