3 years ago

How much kinetic energy does a train with a mass of 30,000 kg have moving 2 m/s?

Physics

1 answer:

Fynjy0 [20]3 years ago

6 0

KE = 60,000 J

Explanation:

KE = (1/2)mv^2

= (1/2)(30000 kg)(2 m/s)^2

= 60,000 J

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Twin A makes a one way trip at 0.6c to a star 12 light years away while twin B stays on Earth. Each twin sends the other a signa

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8 signals received by twin A during the trip.

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