Question

a particle starts travelling on a circle with constant tangential acceleration. the angle between velocity vector and acceleration vector, at the moment when particle completes half the circular track, is

Answer 1

Answer ⇒ The angle between the tangential acceleration and the velocity vector is always 0°, this is because bot acts tangentially while in a circular motion.

The Centripetal acceleration is perpendicular to the velocity vector thus also to the tangential acceleration in case of the circular motion.

But in case of the Net Acceleration angle between the velocity vector and net acceleration may vary depending upon the velocity and magnitude of tangential and centripetal acceleration.

As per as the Question, If a particle will cover half the circle then its velocity vector makes 90° with the centripetal acceleration and 0° angle with tangential acceleration acceleration. For Net Acceleration, Angle is not sure. It may vary depending upon the conditions.

Hope it helps.

Answer 2

Answer:

it is your answer...in picture