Physics, 19.02.2020 03:46 shanicet047ox9ff6
A tennis ball is tossed straight up into the air. It flies up, it reaches the peak position, and then it falls back down. What can we tell about the ball's velocity and acceleration, when the ball is at the peak of its trajectory? (Only one answer is correct.)
A. The velocity is zero, and the acceleration points up.
B. The velocity points up, and the acceleration is zero.
C. Both the velocity and the acceleration point up.
D. The velocity points down, and the acceleration is zero.
E. The velocity points down, and the acceleration points up.
F. Both the velocity and the acceleration point down.
G. The velocity is zero, and the acceleration points down
Answers: 2
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When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?
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Physics, 22.06.2019 18:30
Energy can be transformed from one form to another. the diagram shows one such process. which energy transformation is represented in the diagram? nuclear to thermal and radiant nuclear to electrical and chemical chemical to nuclear and radiant chemical to electrical and nuclear
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A tennis ball is tossed straight up into the air. It flies up, it reaches the peak position, and the...
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