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Physics, 25.07.2019 21:30, xxxanitaxxx
In which situation is no work considered tone be done by a force? a) when the angle between the force and displacement is 180° b) when the angle between the force and displacement is 90° c) when the angle between the force and displacement is 45° d) when the angle between the force and displacement is 0°
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Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33
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