Acompact disc rotates from rest up to an anqular speed of 32.8 rad/s in a time of 0.862 s. (a) what is the angular acceleration of the disc, assuming the angular acceleration is uniform? rad/s2 (b) through what angle does the disc turn while coming up to speed? rad (c) if the radius of the disc is 4.45 cm, find the tangential speed of a microbe riding on the rim of the disc. m/s (d) what is the magnitude of the tangential acceleration of the microbe at the given time? use the values from practice it to you work this exercise. (a) what are the angular speed and angular displacement of the disc 0.250 s after it begins to rotate? rad/s a0 rad (b) find the tangential speed at the rim at this time. m/s

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

e/c, where e is its total energy

the answer should be in the picture.