A stationary 1000kg cannon fires a 50kg cannonball. The cannonball leaves the cannon at 150m/s and as a result, the cannon recoils at 7.5m/s in the opposite direction. What is the total momentum of the cannon and cannonball after firing?

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 word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

conservation of mass

mass before something happens = mass afterwards