Question

a body is moving on a circle 8718 with the speed of 20 metre per second which is the decreasing at the rate of 5 metre per second square and an instance the angle made by the angle its acceleration with its velocity is ​

Answer 1

hey mate...

here is your answer...

As it decelerating, velocity and tangential acceleration will be opposite to each other.

Radial acceleration is V2/r = 20m/s2.

Both tangential and radial acceleration are equal so the angle of absolute acceleration is 45 degrees with either if them.

Angle with velocity vector is 135 or 215 whether counter clockwise or clockwise measurement.

hope it helps...