![mahhvelousg97](/avatars/38782.jpg)
mahhvelousg97
11.02.2020 •
Physics
Attempt 3 You attach a meter stick to an oak tree, such that the top of the meter stick is 2.07 meters above the ground. Later, an acorn falls from somewhere higher up in the tree. If the acorn takes 0.196 seconds to pass the length of the meter stick, how high above the ground was the acorn before it fell, assuming that the acorn did not run into any branches or leaves on the way down
Solved
Show answers
More tips
- A Auto and Moto Which alarm system to choose?...
- A Auto and Moto How to Start a Diesel Engine in Cold Weather?...
- H Health and Medicine Hangover: How to Get Rid of It Quickly?...
- C Computers and Internet How to Calibrate Your Monitor: Useful Tips and Recommendations...
- P Philosophy Agnosticism: Opinion or Belief?...
- L Leisure and Entertainment When will Maslenitsa start?...
- F Family and Home Stay Warm but Don t Overheat: What is the Optimal Temperature for Your Home During Winter?...
- H Health and Medicine Heartburn: Causes and Ways to Get Rid of It...
- S Society and Politics Will Japan become Russia s Military Enemy?...
- F Family and Home How to Choose the Perfect Air Conditioner for Your Life...
Answers on questions: Physics
- B Biology Jackie is going to her local gardening store. She is looking for soil to start her own personal herb garden with oregano, sage, and peppermint. SELECT the properties of...
- H History ¿Qué tipo de pais es Estados Unidos, según Beveridge?...
- H History Lewis and Clark traveled from St. Louis, which is beside the Mississippi River. Which of the following correctly describes the land they saw as they traveled to the Pacific...
- S Social Studies Who said, the unexamined life is not worth living?...
- M Mathematics -x^2=3x-6 using either completing the squares or quadratic formula pls show work!!...
Ответ:
2.944m
Explanation:The top of the metre stick is 2.07 m above the ground
the length of the metre stick is 1 metre the
bottom of the metre stick is 2.07 - 1 m above the ground
the bottom of the metre stick is 1.07 metres above the ground
Let U = initial velocity
Let S1= distance the acorn fell through the metre rule= 1m
Let S2=distance the acorn fell from the tree to the top of the metre rule
Let t= time acorn fell through the metre rule=0.196sec
Let g= 9.8 m/s^2
S1=Ut + 1/2gt^2
1=0.196×U + ½×9.8×0.196×0.196
1=0.196U +0.1882
1-0.1882=0.196U
0.196U=0.8118
U=4.142m/s.
Initial velocity of the acorn=0, velocity of acorn falling through=U=4.142m/s
V^2=U^2 +2g •S2
4.142^2= 0 + 2× 9.8×S2
17.14=19.6×S2
S2=0.874m
The height the acorn fell from=S2+ 2.07m
=2.07+0.874
=2.944m
Ответ: