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# Momentum

From classical mechanics to quantum field theory, momentum is the Universe's preferred language to describe motion. Learn here about momentum, its conservation, and how it captures our intuitions.

Take the acceleration of gravity as \(10\text{ m/s}^2.\)

Assume that the effect on the bullet by gravity is negligible.

A bullet with mass \(13.0\text{ g}\) and speed \(434\text{ m/s}\) hits a wooden block of mass \(390.0\text{ g}\) on a frictionless table. This bullet comes to a complete stop inside the wooden block. What is the approximate speed of the wooden block and bullet after the bullet stops inside the block?

Assume that the mass loss of the block by the bullet is negligible.

A bullet with mass \(4.40\text{ g}\) and speed \(773\text{ m/s}\) flying horizontally hits a wooden block of mass of \(520\text{ g}\) on a frictionless table. Now the bullet passes through the wooden block with a reduced speed of \(513\text{ m/s}.\) What is the speed of the wooden block after the bullet completely passes through it?

Assume that mass loss of the block from the bullet is negligible.

Assume that gravitational acceleration is \(g= 10\) m/s\(^{2}\).

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