Physics, 26.02.2020 03:09 isaiah1027
A projectile is fired upward with an initial speed vo on an airless world. A short time later, it comes back down and has a final speed vo (just before it hits the ground).
What was the sign of the total work done by the force of gravity during the flight?
a. Wgrav=0
b. Wgrav < 0
c. Wgrav >0
Answers: 1
Physics, 22.06.2019 13:40
Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?
Answers: 1
A projectile is fired upward with an initial speed vo on an airless world. A short time later, it co...
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