A proton, which has a mass of 1.67 × 10-27, is moving at 0.80c relative to the laboratory. What does a physicist in that lab measure for its momentum? (c = 3.0 × 108 m/s)

A) 4.0 × 10-19 kg ? m/s
B) 4.4 × 10-19 kg ? m/s
C) 5.0 × 10-19 kg ? m/s
D) 5.8 × 10-19 kg ? m/s
E) 6.7 × 10-19 kg ? m/s


E

Physics & Space Science

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Consider what happens when you jump up in the air. Which of the following is the most accurate statement?

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By studying distant galaxies in the 1920s, Hubble made the following important discovery that led us to conclude that the universe is expanding?

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