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
djverab [1.8K]
3 years ago
13

PLEASE HELP! I don't get it at all! Speed is one thing; distance is another. Where is the arrow you shoot up at 50m/s when it ru

ns out of speed?
Physics
2 answers:
LuckyWell [14K]3 years ago
4 0
I got you b, V(final)^2=V(initial+2acceleration*displacement
So this turns to (0m/s)^2=(50m/s)^2+2(9.8)(d) so just flip it all around to isolate d so you get
-(50m/s)^2/2(9.8) = d so you get roughly 12.7555 meters up
alina1380 [7]3 years ago
3 0
... Gravity makes it go 9.8 m/s slower each second.
    So it runs out of speed in (50/9.8) = 5.1 seconds after the shot.

... At the beginning of the shot, its speed is 50 m/s.
    When it runs out of speed, its speed is zero.
    Its AVERAGE speed during the whole 5.1 seconds is  25 m/s .

... Going straight up for 5.1 seconds, at an average speed of  25 m/s,
     it rises to an altitude of

                               (25 m/s) x (5.1 sec)  =  127.5 meters  .

(You said you have an answer of 125 meters.
Whoever worked out that one probably used 10 m/s²
for the acceleration of gravity, instead of the 9.8 that I used.) 


Of course, once the arrow "runs out of speed", it starts falling,
faster and faster, until it hits the ground.  You could calculate
how long it takes to fall, and how fast it's going when it hits the
ground.  But all of that is for another question.

You might be interested in
What unit can be used to measure the mass of a grain of salt
Anna007 [38]

milligrams

Explanation:

The best unit to measure the mass of a grain of salt is the milligram.

This is about; a thousandth of a gram.

  A grain of salt is a very small particle size that can still be visible with the eye.

It has a very low and small mass.

For substances like this, we use the milligram:

             1000milligram  = 1g

learn more:

Mass brainly.com/question/4736384

#learnwithBrainly

           

5 0
3 years ago
Titanium reacts less with oxygen than most metals do. This is a___.
marishachu [46]

Explanation:

this is a physical property

5 0
2 years ago
Positive Charge is distributed along the entire x axis with a uniform density 12 nC/m. A proton is placed at a position of 1.00
lions [1.4K]

Answer:

b.  \Delta KE = 390 eV

Explanation:

As we know that the electric field due to infinite line charge is given as

E =\frac{\lambda}{2\pi \epsilon_0 r}

here we can find potential difference between two points using the relation

\Delta V = \int E.dr

now we have

\Delta V = \int(\frac{\lambda}{2\pi \epsilon_0 r}).dr

now we have

\Delta V = \frac{\lambda}{2\pi \epsilon_0}ln(\frac{r_2}{r_1})

now plug in all values in it

\Delta V = \frac{12\times 10^{-9}}{2\pi \epsilon_0}ln(\frac{1+5}{1})

\Delta V = 216ln6 = 387 V

now we know by energy conservation

\Delta KE = q\Delta V

\Delta KE = (e)(387V) = 387 eV

3 0
3 years ago
Which is formed by positive ions from a base and negative ions from an acid?
Lostsunrise [7]
The answer is: Salt! :)

Have a great day!
6 0
3 years ago
Read 2 more answers
In which of these situations is convection most likely the main form of heat transfer? A.Warm air from a heater on the first flo
Sergeeva-Olga [200]
All points ate true

But option A is perfect
6 0
3 years ago
Read 2 more answers
Other questions:
  • Carbon dioxide is a gas produced by___ and used by ___
    5·1 answer
  • Which of the following statements about earthquakes is false? A. The building and release of stress along a plate boundary can r
    9·2 answers
  • A gauge is reading the pressure at the bottom of a river, at a depth of 6 m. Would the reading be greater or smaller than the re
    15·1 answer
  • Which of these is an advantage of parallel circuits over series circuits?
    14·1 answer
  • Suppose you increase your walking speed from 7 m/s to 11 m/s in a period of 1 s. What is your acceleration?
    15·1 answer
  • Most of the stars in the milky way will end their lives as
    15·1 answer
  • True or false a microchip lets computers process infomation very quickly
    14·1 answer
  • Help 30 points and willgive brainliest
    12·1 answer
  • Pick the correct word to fill up the blank in below question: velocity, combustion, acceleration, gravitation, force
    13·1 answer
  • One of the most common diseases a pet gets intestate with, is a worm infection in the stomach. 'Tape worm' is one such worm whic
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!