A man weighing 490 N on earth weighs only 81.7 N on the moon. His mass on the moon is kg. (Use g=9.8 m/s²)

mass= 50kg

since the mass is constant everywhere

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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as technology advances, new experiments often expose problems in accepted theories. c

hope i

-lavira: )