A test rocket at ground level is fired straight up from rest with a net upward acceleration of 20 m/s2. After 4.0 s, the motor turns off but the rocket continues to coast upward with insignificant air resistance

What maximum elevation does the rocket reach? A) 160 m
B) 330 m
C) 320 m
D) 410 m
E) 490 m


E

Physics & Space Science

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Suppose Einstein had never lived and did not publish the special theory of relativity in 1905. According to most historians of science, when would someone else have discovered the theory?

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The tension in the string is closest to:

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Physics & Space Science