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
Georgia [21]
3 years ago
15

Si se deja caer una piedra desde un helicóptero en reposo, entonces al cabo de 20 s cual será la rapidez y la distancia recorrid

a por la piedra
Physics
1 answer:
ahrayia [7]3 years ago
4 0

Answer:

La piedra alcanza una rapidez de 196.14 metros por segundo y una distancia recorrida de 1961.4 metros en 20 segundos.

Explanation:

Si se excluye los efectos del arrastre por la viscosidad del aire, la piedra experimenta un movimiento de caída libre, es decir, que la piedra es acelerada por la gravedad terrestre. La distancia recorrida y la rapidez final de la piedra pueden obtenerse con la ayuda de las siguientes ecuaciones cinemáticas:

v = v_{o} + g\cdot t

y - y_{o} = v_{o}\cdot t + \frac{1}{2}\cdot g \cdot t^{2}

Donde:

v, v_{o} - Rapideces final e inicial de la piedra, medidas en metros por segundo.

t - Tiempo, medido en segundos.

g - Aceleración gravitacional, medida en metros por segundo al cuadrado.

y. y_{o} - Posiciones final e inicial de la piedra, medidos en metros.

Si v_{o} = 0\,\frac{m}{s}, g = -9.807\,\frac{m}{s^{2}}, y_{o} = 0\,m, entonces:

v = 0\,\frac{m}{s} +\left(-9.807\,\frac{m}{s^{2}} \right) \cdot (20\,s)

v = -196.14\,\frac{m}{s}

y-y_{o} = \left(0\,\frac{m}{s} \right)\cdot (20\,s) + \frac{1}{2}\cdot \left(-9.807\,\frac{m}{s^{2}} \right) \cdot (20\,s)^{2}

y-y_{o} = -1961.4\,m

La piedra alcanza una rapidez de 196.14 metros por segundo y una distancia recorrida de 1961.4 metros en 20 segundos.

You might be interested in
A newton-meter is a measure of work also known as the _____.
MatroZZZ [7]
1 newton-meter is 1 Joule, the unit of work and energy.
4 0
3 years ago
Provide one example of how Science drives Technology.
evablogger [386]

Answer:

Scientific knowledge is used to create new technologies. New technologies often allow scientists to explore nature in different ways and make new discoveries.

Explanation:

7 0
2 years ago
Read 2 more answers
FREE BRAINLEST JUST COMMENT MRBEAST
Pepsi [2]

Answer:

MRBEAST-

Explanation:

6 0
3 years ago
Read 2 more answers
classroom and draw an approxim object Three forces are acting on an object (Figure 1.32) which is in equilibrium. Determine forc
kumpel [21]
I’m not good with physics but I’m good with the theory what goes up must come down
6 0
3 years ago
Convection occurs when thermal energy is transferred by the movement of _______
mina [271]

Answer:

Convection occurs when thermal energy is transferred by the movement of fluid particles.

Explanation:

Transfer of heat energy by the movement of fluid particles is called convection. Convection takes place in liquids and gases due to kinetic energy. When heat is provided to liquids and gases they expand and move faster.

Molecules with higher kinetic energy become less dense and rise up to the surface of liquid, whereas molecules with lower energy move towards the bottom. This up and down movement of molecules causes convection currents in fluids.

5 0
3 years ago
Read 2 more answers
Other questions:
  • A student does 25 J of work on the handle of a pencil sharpener. If the pencil sharpener does 20 J of work on the pencil, what i
    13·1 answer
  • What happens to a gas that is enclosed in a rigid container when the temperature of the gas is increased?
    15·1 answer
  • If the vector below is multiplied by 2, what will be its end point?
    14·2 answers
  • Part II # 1 A mass on a string of unknown length oscillates as a pendulum with a period of 4 sec. What is the period if: (Parts
    10·1 answer
  • The phenomenon that State magnetic field affect electric field
    13·1 answer
  • The boom of a fire truck raises a fireman (and his equipment – total weight 280 lbf) 60 ft into the air to fight a building fire
    10·1 answer
  • When a rattlesnake strikes, its head accelerates from rest to a speed of 28 m/s in 0.65 seconds. Assume for simplicity that the
    9·1 answer
  • The difference between Lincoln's plan of reconstruction and the Radical Republicans' is that Lincoln wanted to reunite the union
    14·1 answer
  • Given a force of 100 N and an acceleration of 5 m/s2, what is the mass
    12·2 answers
  • to keep everything the same between the man and the boy, the table below for the mans motion covers the same interval as the one
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!