Asked by Brianna
A stone was thrown into the air and returned after 4.2 seconds.
a) At what speed was the stone thrown? (20.6) <- i got that right.
b) How high did the stone go? (21.6 m)
i don't know how to get b. what steps do i do?
a) At what speed was the stone thrown? (20.6) <- i got that right.
b) How high did the stone go? (21.6 m)
i don't know how to get b. what steps do i do?
Answers
Answered by
MathMate
The stone with an initial velocity, v, has a kinetic energy of (1/2)mv².
When at the top, velocity = 0, but the potential energy is mgh.
So equate energies to get
mgh = (1/2)mv²
Solve for h.
When at the top, velocity = 0, but the potential energy is mgh.
So equate energies to get
mgh = (1/2)mv²
Solve for h.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.