what is a angle between linear acceleration and angular acceleration of a particle in uniform circular motion.
Answers
Acceleration is change in speed. Linear acceleration is how much your linear speed is changing: you push down on your car’s accelerator, and your car accelerates: it speeds up in a straight line.
Angular acceleration is change in *angular* speed, which measures how many degrees of a circle you travel per second. On a carousel, you may be traveling at 10 degrees per second. If the carousel speeds up, you might accelerate from 10 to 12 degrees per second.
If your angular speed (degrees per second) increases, then obviously your speed in a straight line at any moment increases too. The equations in other answers describe the relationship between an increased degrees-per-second speed and an increase in your straight-line speed.
The angle between linear acceleration and angular acceleration is 90.