If you drop a feather and a coin at the same time in a vacuum tube which will reach the bottom first

The feather and coin are put in a vacuum which means they will fall at the

same rate.

This is because, a vacuum tube has no air resistance/interference present.

The air resistance and force of gravity  is what makes an object fall at

different rates.

When there is no air resistance , the objects which include the feather and

the coin will reach the bottom together at the same rate.

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Oh why restrict ourselves to small ambitions ? ! ?

Let's drop a SPECK OF DUST and a BATTLESHIP at the same time in a vacuum.

They will stay together all the way down, and hit bottom at the same time.

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.