Which statement explains what would happen to an astronaut in space after the astronaut throws a rock?

Which statement explains what would happen to an astronaut in space after the astronaut throws a rock? The astronaut would move in the opposite direction that the rock is moving to counter the rock’s momentum. What will happen if a moving cart hits a stationary cart with the same mass in an elastic collision? In

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What is perfectly inelastic collision in physics?

What is perfectly inelastic collision in physics? A collision in which the objects stick together is sometimes called a perfectly inelastic collision because it reduces internal kinetic energy more than does any other type of inelastic collision. In fact, such a collision reduces internal kinetic energy to the minimum it can have while still conserving

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