Q49 / 103 · NTA Abhyas (NEET) 2020 · Physics · Motion In One Dimension
Choose the wrong statement.
- Azero-velocity of a particle at any instant does not necessarily mean that its acceleration is zero
- Bzero acceleration of a particle at any instant does not necessarily mean that its velocity is zero
- Correct answerCif the speed of a particle is constant, its acceleration must be zero
- Dnone of the above
Solution
When a body is released is gravity.
A body moves with uniform velocity.
If the speed of the particle is constant and
acceleration is zero. e.g. of particle moves in a fixed direction. velocity = constant, hence acceleration must be zero.
acceleration is non-zero. e.g. A particle undergoes circular motion. accelerating particle is acting radially inward.
A body moves with uniform velocity.
If the speed of the particle is constant and
acceleration is zero. e.g. of particle moves in a fixed direction. velocity = constant, hence acceleration must be zero.
acceleration is non-zero. e.g. A particle undergoes circular motion. accelerating particle is acting radially inward.
Hence, the correct answer is option: 'C'.