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
Arada [10]
4 years ago
11

An athlete is running at a constant velocity with a javelin held in his right hand. The force he is applying on the javelin as h

e carries it is 5.0 newtons. If he covers a distance of 10 meters, what work has he done on the javelin?
Physics
2 answers:
NeTakaya4 years ago
8 0
-- Since our athlete is running at constant velocity, AND the javelin is
staying with him, the speed of the javelin itself must also be constant. 

-- Therefore, the force of 5N that he's applying to the javelin can't possibly
be in the direction that he and the javelin are moving, otherwise the javelin
would be accelerating. 

-- So we know that the force is perpendicular to the javelin's motion ... like
probably straight up to prevent it from falling to the ground.

-- Since none of the force is in the direction the javelin is moving, the force
does no work on the javelin.  Zero.
choli [55]4 years ago
8 0

Answer:

the answer is  Zero. plato 0 joules

Explanation:

You might be interested in
Which number is larger value : 5.6*10^23 or 8.9*10^6<br><br> Need Help
oee [108]

Answer:

5.6*10^23. if 10^n is greater, that means its the larger value. hope dis helps

Explanation:

8 0
3 years ago
Sometimes students are taught that "air expands as it is heated". And sometimes they are taught that "as air expands it cools".
hram777 [196]

Answer:

Both are true under specific circumstances. And are related to Boyle's law. volume and pressure in a gas are inversely proportional.

Explanation:

There is a tendency to entropy in our reality, that is, in particular true and visible with gases, they tend to occupy the whole space where they are confined, when we heat a volume of gas, then the movement of the particles and in consequence the pressure of the gas increases and to compensate this the volume tends to be increased too, according to Boyle's law. And the opposite happens when the volume is increased, then the pressure is  relieved and since the particles are further one from each other, then the temperature is lower, and therefore it cools down.

7 0
4 years ago
Superman is supposed to leap tall buildings in a single bound. Suppose that he obeys the normal laws of physics in this feat. Es
lys-0071 [83]

Answer:

31.32 m/s

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

Let us assume the height of the Disque hall is 50 m

v^2-u^2=2as\\\Rightarrow -u^2=2as-v^2\\\Rightarrow u=\sqrt{v^2-2as}\\\Rightarrow u=\sqrt{0^2-2\times -9.81\times 50}\\\Rightarrow u=31.32\ m/s

In order to make the jump Superman's initial velocity must be greater than or equal to 31.32 m/s

6 0
3 years ago
How to answer this question?
laila [671]

Answer:

measure the vector diagram first

5 0
3 years ago
What is the name of asteroids that stray outside the main belt and cross outside Mars taking them closer to the Sun?
Svetradugi [14.3K]

Answer:

b im pretty sure (let me know if this is correct!) :)

Explanation:

6 0
3 years ago
Other questions:
  • Draw, as best you can, what a velocity graph would look like as a function of time if the acceleration of the object is negative
    6·1 answer
  • It takes 200 N to move a box 10 meters in 8 seconds. How much power is
    5·1 answer
  • Astronomers think planets formed from interstellar dust and gases that clumped together in a process called? A. stellar evolutio
    13·2 answers
  • The severity of a tropical storm is related to the depressed atmospheric pressure at its center. In August 1985, Typhoon Odessa
    13·1 answer
  • As a photon from the Sun's core interacts with an atom or ion, the photon gives up its energy to the particle. But the excited p
    14·1 answer
  • What’s are some forms of chemical energy
    8·1 answer
  • What are the two factors that affect the period of a pendulum?
    9·1 answer
  • What is the mechanism that allows species to change over time?
    13·1 answer
  • Determinar el flujo de calor a través del piso de losa cuyas medidas 3 X 5 cm y temperaturas superficiales son -20 ºC y 40 ºC, l
    13·1 answer
  • A change that produces one or more new substances is called _____.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!