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Question

Which of the following statement is not correct for an object moving along a straight path in an accelerated motion?


A

Its speed keeps changing.

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B

Its velocity always changes

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C

It always goes away from the earth

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D

A force is always acting on it

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Solution

The correct option is C

It always goes away from the earth


Explanation:

  1. Newton's third law of motion states that when one body exerts a force on another, the first body experiences a force equal in magnitude and direction to the force exerted.
  2. To move away from the earth, the object's acceleration must be greater than gravity's acceleration.
  3. To escape gravity, simply moving along a straight path is insufficient.

Hence, Option(C) is correct.


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