Joshua skates in a straight line at a constant speed for 1 min, then begins going in circles at the same rate of speed, and finally begins to increase speed. When is he accelerating? Explain your answer

He is accelerating both when he is going in circles at the same rate of speed and when he is increasing speed. One involves a change in position, while the other involves a change in spped. Both speed and direction are part of velocity, and any change of velocity is acceleration.

Explanation: Hope this helps :)

answer: the correct answer id option(d).

explanation:

snell's law refraction:

the angle of refraction =

the angle of incidence =

refractive index of air = = 1

refractive index of glycerol = 1.47

from the given options, the most closest answer to 63.72° is 65° of option (d).

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue