Question

A ball is thrown up, then
a) Path of particle on the surface of ball is parabola
b) Path of centre of mass is parabola
c) Path of centre of mass is complex
d) Path of centre of mass is straight line
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Answer 1

Answer:

a)

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Answer 2

Answer:

The relevant answer to the question is : option (a) Path of particle on the surface of ball is parabola.

Explanation:

When the ball is thrown up, it goes to a certain height with a certain velocity and when it returns back to its path, then the path of the particle on the surface of ball becomes parabolic.

• hence, the acceleration due to the vertical component remains (-g).

The negative sign here indicates the acceleration due to downward direction.

• the net acceleration then does not becomes zero so, the velocity of the ball changes and thus the kinetic energy also changes.

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