Physics, 26.02.2020 03:59 natimike10
A projectile is fired upward with an initial speed v0 on an air filled world. A short time later, it comes back down and has a final speed v < v0 (air resistance is not negligible). What was the sign of the work done by friction during the flight?
(A) W fric > 0
(B) Wfric=0
(C) Wfric < 0
Answers: 3
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A projectile is fired upward with an initial speed v0 on an air filled world. A short time later, it...
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