Before the asteroid is threw, the total momentum is zero, since neither Superman nor the asteroid are moving.

Conservation of momentum commands the total momentum after the astronaut is threw must be zero too. This means that Superman's backward momentum afterward throwing the asteroid is equivalent to the asteroid forwards momentum, in size.

Momentum is mass times velocity. We know the mass of the asteroid is 1000M and its velocity is 850 m/s, so its momentum is
(1000M)(850 m/s) = 850,000M m/s.

So to get the answer: dividing by Superman's mass, M, gives his recoil velocity o 850,000 m/s.

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3 years ago

The state of matter in which the molecules are closest together is the _____.

ExtremeBDS [4]

Solid phase. The atoms are tightly packed and vibrate.

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4 years ago

Describe three important ways we use the electromagnetic spectrum in our everyday lives.

OlgaM077 [116]

Answer:

We use X-rays to help the injured, Radiowaves to communicate or entertain, and Visible light to see.

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