A student is throwing a ball. She throws the ball up with her left hand, it passes over her head, and she catches it with her ri
ght hand. The picture shows the path of the ball. The ball is numbered at different positions. What is happening at position 2?
A.Kinetic energy increases as potential energy decreases.
B.Potential energy increases as kinetic energy decreases.
C.Kinetic energy is zero, and the potential energy is greatest.
D.Potential energy and kinetic energy both stay the same.
A.Kinetic energy increases as potential energy decreases.
B.Potential energy increases as kinetic energy decreases.
C.Kinetic energy is zero, and the potential energy is greatest.
D.Potential energy and kinetic energy both stay the same.
1 answer:
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Answer:
Explanation:
For a linear elastic material Young's modulus is a constant that is given by:
Here, F is the force exerted on an object under tensio, A is the area of the cross-section perpendicular to the applied force, is the amount by which the length of the object changes and
is the original length of the object. In this case the force is the weight of the mass:
Replacing the given values in Young's modulus formula: