A rock is dropped from a height of 3,245 m. If we ignore air resistance, how fast will it be travelling after it falls for 3.4 s
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Answer:
vb = 22.13 m/s
Explanation:
ma = 124 kg
mb = 13 kg
vi = 2.10 m/s
According to the property of conservation of momentum, and considering that, initially, both the astronaut and the bag moved together at 2.10 m/s:
The minimum final velocity of the bag, vb, the will keep the astronaut from drifting away forever occurs when va = 0:
The minimum final velocity of the bag is 22.13 m/s.