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a ballistic pendulum is a device used to measure the speed of a bullet. A bullet...

a ballistic pendulum is a device used to measure the speed of a bullet. A bullet of mass m = 50g is fired at a block of wood (mass m =750g) hanging from a string. The bullet embeds itself in the block, and causes the combined block plus bullet system to swing up a height h=0.45m. What is the initial speed of the bullet before it hits the block?

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The answer : Initial velocity of Bullet before it hits the block is 48m/s.

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