Suppose 3 neutrons are released by an atom of u-235 in the first stage of a fission chain reaction. each of these neutrons has enough energy to cause another fission reaction in another nucleus of u-235, releasing more neutrons. and if all of those 2nd stage neutrons cause other nuclei to fission in a 3rd stage, how many total u-235 atoms will have undergone fission after these 3 stages of the chain reaction?
a. 27
b. 9
c. 11
d. 12

Matt is driving down 7th street. he drives 150 meters in 18 sec. assuming he doesn’t slow down or speed up, what is his speed?

Aforce of 9.00 newtons acts at an angle of 19.0 to the horizontal. what is its component in the horizontal direction?

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?