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
lana66690 [7]
3 years ago
13

Physics. How to solve this?

Physics
1 answer:
attashe74 [19]3 years ago
4 0

You can't.

Work = (force) x (distance) .

You can squeeze distance out of the speed, but there's no way to determine the FORCE being used.

If there's no friction and the car is traveling in a straight line, then NO force is needed to keep it going. It just keeps going. (Newton's 1st law of motion.)


You might be interested in
Si tenemos tres cubos del mismo tamaño (hierro, madera e icopor). ¿Qué diferencias puede encontrar entre ellos?
cricket20 [7]

Answer: La diferencia es el peso (o la masa), siendo que el cubo de hierro es el mas pesado, después viene el de madera y después el de icopor.

Explanation:

Ok, los 3 cubos tienen el mismo tamaño, lo que implica que tienen el mismo volumen.

Ahora es útil recordar la relación:

Densidad = masa/volumen.

Masa = densidad*volumen.

Nosotros sabemos que la densidad del hierro es mas grande que la de la madera, y la densidad de la madera es mas grande que la del icopor.

Entonces, por la relación anterior, y sabiendo que todos los cubos tienen el mismo volumen, podemos reconocer que el cubo de hierro tiene mayor masa, después viene el de madera y después viene el de icopor.

Y sabiendo que:

masa*gravedad = peso

podemos saber que el cubo mas pesado es el de hierro, después el de madera y después el de icopor.

Además de esta diferencia, también hay otras que no dependen tanto del tamaño del objeto, como pueden ser las capacidades caloríficas, el como reaccionan a campos eléctricos y cosas así que son triviales, pues son diferentes para casi todos los materiales.

5 0
3 years ago
What is an example of a form of friction that impedes motion
Travka [436]

Answer:

to me I think is static

Explanation:

that is my own thinking

4 0
3 years ago
Which of the following best describes wind?
Afina-wow [57]

Answer:

The answer is D the rising of warm air pushing down cool air.

5 0
3 years ago
Twenty grams of a solid at 70°C is place in 100 grams of a fluid at 20°C. Thermal equilibrium is reached at 30°C.
zaharov [31]

Answer:

c. is more than that of the fluid.

Explanation:

This problem is based on the conservation of energy and the concept of thermal equilibrium

heat= m s \Delta T


m= mass

s= specific heat

\DeltaT=change in temperature

let s1= specific heat of solid and s2= specific heat of liquid

then

Heat lost by solid= 20(s_1)(70-30)=800s_1


Heat gained by fluid=100(s_2)(30-20)=1000s_2


Now heat gained = heat lost

therefore,

1000 S_2=800 S_1

S_1=1.25 S_2

so the specific heat of solid is more than that of the fluid.

8 0
3 years ago
When you observe a distant galaxy whose photons have traveled for 10 billion years before reaching earth we are seeing that gal?
expeople1 [14]
In reality we don't see the galaxy we see it's reflection .. the light hits or got emitted by the star travel all the way long to hit our eyes .. we see their reflection . everything around you that you see is it's reflection
8 0
3 years ago
Other questions:
  • Which statement below best describes the properties of solids? A. Solids have both definite shape and definite volume. B. Solids
    7·1 answer
  • Which of the following statements about rest and physical activity is NOT true?
    14·1 answer
  • (b) How far from the surface will a particle go if it leaves the asteroid's surface with a radial speed of 1510 m/s? (c) With wh
    5·1 answer
  • 7) The acceleration due to gravity near the surface of Mars is about one-third of the value
    12·1 answer
  • An object is moving forward with a constant velocity. Which statement about this object MUST be true?
    8·1 answer
  • Which of the following distances is the longest?a. 0.006 kilometers
    5·1 answer
  • A .001 kg bead slides without friction around a loop-the-loop. The bead is released from a height of 20.6 m from the bottom of t
    11·1 answer
  • Please help! Didn’t have right subject so i chose one that may be similar.
    15·2 answers
  • B. A 20kg wagon is pulled up a 30° incline at an acceleration of 2.5ms?. The force pulling the wagon is parallel to the incline
    6·1 answer
  • If you run around a circular track with a radius of 10m, what is the displacement after 3 full laps back to the start line?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!