You and one of your friends were astronauts on a spaceship which got an infestat
ID: 1637785 • Letter: Y
Question
You and one of your friends were astronauts on a spaceship which got an infestation After pulling an epic Ripley on the Queen Alien Bitch, you and your friend abandon the stricken spaceship. You take one of the alien eggs with you for study. However, after seeing face-huggers mouth-rape your crew mates, neither of you wanted to hold it until the rescue ship arrives - so you played catch with it! Here are the details: Your mass, with spacesuit, M_u = 175kg; your friend's mass, with spacesuit, M_f = 225kg, (I made you the skinny one - you're welcome!); the alien egg's mass, Me = 50kg. Each exo-skeleton-space-suit can apply a force to the egg of 800N over 0.5 meters for throwing it. You start holding the egg. A) What is the egg's momentum after you first throw it to your friend? B) Your friend catches it and throw it back to you and you catch it. At that point what are the momentum of your friend and of you holding the egg? c) Calculate momentum of friend throws it. d) Calculate momentum when you catch it (you with egg & friend) e) Who will be the last one to catch & throw it?Explanation / Answer
a)
F = force on egg = 800 N
Me = mass of egg = 50 kg
ae = acceleration of egg = F/Me = 800/50 = 16 m/s2
d = distance travelled = 0.50 m
Vo = initial velocity = 0 m/s
Vf = final velocity
using the equation
Vf2 = Vo2 + 2 a d
Vf2 = 02 + 2 (16) (0.50)
Vf = 4 m/s
momentum of egg is given as
Pe = Me Vf = 50 x 4 = 200 kgm/s
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