Assuming pressure and temperature are held constant, then what happens to the volume of a non-rigid container when the number of molecules in the container is doubled

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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total distance/total time

(85 + 82)/(5+3)

167/8

20 just over

+15-35=-20

going in opposite directions

snell's law

refractve index = sin incidence / sin refraction