Question
You drop a rock into a deep well and 4.1s later hear the splash.
How far down is the water? Neglect the travel time of the sound.
Express your answer using two significant figures.
How far down is the water? Neglect the travel time of the sound.
Express your answer using two significant figures.
Answers
herp_derp
d = vt + at²/2
d = 0(4.1) + (-9.8)(4.1)²/2
d = -82 m
It is negative because this is the distance from ground level. In this case, the negative only gives its direction. Therefore, the answer is 82 m.
d = 0(4.1) + (-9.8)(4.1)²/2
d = -82 m
It is negative because this is the distance from ground level. In this case, the negative only gives its direction. Therefore, the answer is 82 m.