. a rock of mass 0.5 kg is launched straight up. a constant upward force of 405 n acted on the rock while it moved 25 cm upward starting from rest. ignore air resistance. a. find the launce speed using the work-energy theorem [use g = 10 m/s2). b. using energy ideas, find the maximum height above the launch point (25 cm) the rock will reach.?
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Category: science |
Author: Giiwedin Frigyes

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