A spaceship leaves Earth and maintains a constant force by means of a nuclear engine. As the speed of the spaceship increases, an observer on Earth finds that relative to her the magnitude of the spaceship's acceleration is
a. 0.
b. decreasing.
c. constant.
d. increasing.
e. proportional to the kinetic energy of the spaceship.
B
Physics & Space Science
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Indicate whether the statement is true or false
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a. True b. False Indicate whether the statement is true or false
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If the total energy of an electron in an accelerator is five times its rest energy, what is its speed? (c = 3.00 × 10^8 m/s)
a. 1.98 × 10^8 m/s c. 2.32 × 10^8 m/s b. 2.94 × 10^8 m/s d. 2.90 × 10^8 m/s
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