1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
scoundrel [369]
3 years ago
9

You throw a small rock straight up from the edge of a highway bridge that crosses a river. The rock passes you on its way down,

5.00 s after it was thrown. What is the speed of the rock just before it reaches the water 22.0 m below the point where the rock left your hand? Ignore air resistance.
Physics
1 answer:
Agata [3.3K]3 years ago
7 0

Answer:

Explanation:

for vertical movement , time to reach the top = time to reach the hand = 2.5 s

v = u - gt

At the top , v = 0 , time t = 2.5 s

0 = u - g x 2.5

u = 2.5 x 9.8 = 24.5 m /s

velocity of throw = 24.5 m /s

So , when it passes the hand on its way down , it will have velocity equal to 24.5 m /s and it will accelerate downwards . Let its velocity down by 22 m be v

v² = u² + 2 g s

= 24.5² + 2 x 9.8 x 22

= 600.25 + 431.2

= 1031.45

v = 32.11 m /s .

You might be interested in
Is work done in this example: A student lifting a heavy backpack off of the floor.
vagabundo [1.1K]
I don't know what u mean
4 0
3 years ago
Read 2 more answers
Which component is used to change alternating current to direct current
Ad libitum [116K]
A rectifier is used.
3 0
3 years ago
Read 2 more answers
If i hold a glass full of air upside down, and i take it to the bottom of the swimming pool without tipping it, the density (thi
s2008m [1.1K]
The answer to fill in the blank in the question above is "greater than" based on the physic of the air density. The density of air is affected by the temperature and the pressure based on the ideal gas law. A high pressure will make the air becomes denser and the bottom of swimming pool has a higher pressure than the surface<span>.</span>
6 0
3 years ago
How would the seasons change if the earth were tilted at 90 degrees instead of 23.5?
PIT_PIT [208]
<span>The 23.5 degree tilt is responsible for the seasons. If the earth had no tilt there would not be seasons. If the earth was tilted by 90 degrees the seasonal changes would be at the most extreme. The Earth's pole would point directly at the sun at a point on the track around the sun. As the Earth revolves around the Sun the pole would alternate twice each year between pointing directly at the sun and being perpendicular to the sun. 

I hope this helps you! 
xo, Leafling</span>
6 0
3 years ago
If a man has a made of 83 kilograms on earth, what will the force of gravity on his body on the moon
Salsk061 [2.6K]

the man would only weigh 13.7 kg on the moon

hope i helped:)

7 0
3 years ago
Read 2 more answers
Other questions:
  • The theory of _____ suggests that the crust of the earth is divided into pieces and moves about on the upper mantle.
    7·2 answers
  • Your starship, the Aimless Wanderer,lands on the mysterious planet Mongo. As chief scientist-engineer,you make the following mea
    10·1 answer
  • Light is traveling through the different media shown. In which medium does light travel fastest?
    8·2 answers
  • Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun?
    11·2 answers
  • If a man has a mass of 83 kg on Earth what will the force of gravity on his body be on the moon
    14·2 answers
  • Based on Newton's law of motion, which combination of rocket bodies and engine will result in the acceleration of 40 m/s ^2 at t
    8·1 answer
  • Why are simple everyday actions considered
    15·2 answers
  • Two whistles blow at the same time. The first whistle has a frequency twice that of the second whistle (it is a higher pitch). W
    11·1 answer
  • Problem 31:
    12·1 answer
  • Please do all of i will give you brainlest and thanks to best answer
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!