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NEET 2023
Exam
NEET
Year
2023
Subject
Physics
Chapter
Motion in Two Dimensions

NEET 2023 · Physics · Motion in Two Dimensions

A particle is executing uniform circular motion with velocity v and...

A particle is executing uniform circular motion with velocity v⃗\vec{v} and acceleration a⃗\vec{a}. Which of the following is true?

Options

  1. Av⃗\vec{v} is a constant; a⃗\vec{a} is a constant
  2. Bv⃗\vec{v} is not a constant; a⃗\vec{a} is a constant
  3. Cv⃗\vec{v} is a constant; a⃗\vec{a} is not a constant
  4. Dv⃗\vec{v} is not a constant; a⃗\vec{a} is not a constant

Correct answer

D. v⃗\vec{v} is not a constant; a⃗\vec{a} is not a constant

Step-by-step solution

v⃗\vec{v} is not a constant; a⃗\vec{a} is not a constant In uniform circular motion v⃗\vec{v} keeps changing at every instant while magnitude of a remains same but its direction keeps changing. Thus a⃗\vec{a} is also not constant.
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