Physics, 19.09.2019 20:00 zoriahmendoza
Atoy rocket is launched vertically from ground level (y = 0 m), at time t = 0.0 s. the rocket engine provides constant upward acceleration during the burn phase. at the instant of engine burnout, the rocket has risen to 64 m and acquired a velocity of 60 m/s. the rocket continues to rise in unpowered flight, reaches maximum height, and falls back to the ground. the time interval (in s), during which the rocket engine provides upward acceleration, is closest to: ? .
Answers: 1
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You throw a ball upward and let it fall to the ground. your friend drops an identical ball straight down to the ground from the same height. is the change in kinetic energy (from just after the ball is released until just before it hits the ground) of your ball greater than, less than, or equal to the change in kinetic energy of your friend's ball?
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Atoy rocket is launched vertically from ground level (y = 0 m), at time t = 0.0 s. the rocket engine...
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