Physics, 26.09.2019 17:20 Fatimaneedhelp
Jane is riding in a hot air balloon that is rising vertically at a constant speed of 3 m/s over a lake. she reaches out and drops a rock from the balloon when the distance from the rock to the water is 50 m. use g = 10 m/s2, and let the up direction be positive. about how long after jane drops the rock will it splash into the water?
Answers: 1
after Jane drops it.
and 
.
a second-grade polynomial, we obtain two roots, so 
and 
, due negative root has no sense, we take the positive one, so the rock will splash into the water Another question on Physics
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Jane is riding in a hot air balloon that is rising vertically at a constant speed of 3 m/s over a la...
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