Kinematics Question 316

Question: For a body moving with relativ it’stic speed, if the velocity is doubled, then [IIT JEE 2005]

Options:

A) it’s linear momentuM is doubled

B) it’s linear momentum will be less than double

C) it’s linear momentum will be more than double

D) it’s linear momentum remains unchanged

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Answer:

Correct Answer: C

Solution:

Relativ it’stic momentum $ =\frac{m _{0}v}{\sqrt{1-v^{2}/c^{2}}} $ If velocity is doubled then the relativ it’stic mass also increases. Thus value of linear momentum will be more than double.



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