![kaylynnstanley22](/avatars/20773.jpg)
kaylynnstanley22
18.09.2019 •
Physics
Suppose a rock is dropped into a well 9.8 meters deep. a) determine the amount of time t it takes for the rock to hit the bottom of the well. t = incorrect: your answer is incorrect. b) determine the velocity v of the rock as it is hitting the bottom of the well. v = c) if the bottom of the well is lined with thick sand so that the rock does not bounce, what is the velocity vf of the rock just after it hits the bottom of the well? vf =
Solved
Show answers
More tips
- L Leisure and Entertainment What Movies You Should Watch: A Guideline to Make the Right Decision...
- F Family and Home How to Choose a Baby Stroller: Tips from Experienced Parents...
- H Health and Medicine 5 Simple Steps to Quit Smoking for Good...
- C Computers and Internet How to Download Videos from YouTube? Simple Steps to Download Any Content...
- H Health and Medicine What is the Normal Blood Sugar Level in a Healthy Person?...
- S Style and Beauty How to Get Rid of Acne: Scientifically Proven Methods...
- L Leisure and Entertainment How to Choose the Perfect Gift for Men on February 23rd?...
- C Computers and Internet How to Delete Your Account on Odnoklassniki...
- H Health and Medicine 10 Simple and Effective Tips on How to Lose Weight in a Week...
- F Food and Cooking What s the Best Rice for Cooking Plov?...
Answers on questions: Physics
- P Physics Which statement best describes air pressure at high altitudes? (points : 3) air pressure decreases as altitude increases. air pressure increases as altitude increases. air...
- P Physics What is the major source of energy for humans...
- P Physics .. show that for a uniformly acceleration motion, v2= u2+2as where the symbols have their usual meanings...
- P Physics Can you die if you bust a hemorrhoid?...
- P Physics What causes a flow of charges?...
- S Social Studies I will give brainliest...
- M Mathematics The equation (x – 5)2 = –2(y + 1) represents a parabola. Complete the statements describing the graph. The vertex is (5,1) (5,-1) (-5,1) (-5,-1) The graph opens up left...
- E English 5. What s the author s rebuttal in Quilt of a Country? * 3 points A. The reality of national unity is more important than the impossibility of a national character. B. The...
- H History 2x+3y=13 x=2+3y Solve using the best method...
- B Biology Balance the following equations using the appropriate coefficients. Remember that balancing one element may temporarily unbalance another. You will have to correct the imbalance...
Ответ:
a) t=1.41 sec
b)13.8m/s
c) 0 m/s
Explanation:
a) We use the formula of Motion with constant acceleration:
Where:
g= gravitational acceleration
t=time
y=9.8meters
We isolate t from equation and solve:
t=1.41 sec
b) Velocity at the bottom of the well can be determined by expression:
c) vf= 0 m/s The sand absorbs the potential energy of the rock, so its final velocity after hitting the bottom of the well will be 0 m/s.
Ответ: