18. If one ball with a momentum of 50 kg. m/s hits a ball at rest and no other forces are acting on either ball, what's
the total momentum of both balls after the collision?
O A. O kg. m/s
O B. 50 kg. m/s
O C. 25 kg. m/s
O D. 100 kg. m/s

Protons and neutrons are found within the nucleus of an atom

Me with this and you will be marked brainliest

Afaulty model rocket moves in the xy-plane (the positive y direction is vertically upward). the rocket's acceleration has components ax(t) = ? t2 and ay(t) = ? ? ? t, where ? = 2.50 m/s4 , ? = 9.00 m/s2 , and ? = 1.40 m/s3 . at t = 0 the rocket is at the origin and has velocity ~v0 = v0x ? i + v0y ? j with v0x = 1.00 m/s and v0y = 7.00 m/s. (a) calculate the velocity and position vectors as functions of time. (b) what is the maximum height reached by the rocket? (c) sketch the path of the rocket. (d) what is the horizontal displacement of the rocket when it returns to y = 0?