Uniform circular motion describes the motion of a body traversing a circular path at constant speed. Since the body describes circular motion, its distance
from the axis of rotation remains constant at all times. Though the body's
speed is constant, its velocity is not constant.
(1) What is the distance travelled by the object if it goes a complete round in a
circular path of radius 50m?
(II) What is the displacement in the above situation?
(iii) Calculate the speed of the object if it takes 20sec to complete a round.
(iv) Calculate the average speed after completing 3 rounds.
PLEASE HELP

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

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