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
Salsk061 [2.6K]
2 years ago
9

a bus travelling on a straight road at 25m/s accelerates uniformly at 5m/s squared for 2 seconds. find its speed in kilometres p

er hour
Physics
1 answer:
notka56 [123]2 years ago
5 0

Answer:

126 kmh⁻¹

Explanation:

We can simply solve this by applying motion equations

where  

v - final velocity

u - initial velocity

a-acceleration

t - time

v = u + at

  <em>= 25 + 5×2 = 35 ms⁻¹</em>

<em>   = (35/1000)×3600 = 126 kmh⁻¹</em>

You might be interested in
What happens to the frequency of a wave If the wavelength is decreased by half
podryga [215]

Answer:

Frequency  doubles.

Explanation:

Frequency doubles because Wavelength and Frequency are inversely proportional. That means if one decreases the other one increases. So, if wavelength is half, frequency is the opposite, doubles.

8 0
3 years ago
Which country features the largest scale model of the solar system?.
matrenka [14]

The Sweden

___________

8 0
2 years ago
Read 2 more answers
onsidering light at the two ends of the visible light spectrum, violet light has a _____ wavelength and a _____ photon energy th
Alenkasestr [34]

Answer:

Shorter, higher

Explanation:

6 0
1 year ago
Which of the following is not a reason fluorescent lamps are advantageous over incandescent lamps?
cricket20 [7]

Answer;

B. Fluorescent lamps operate at a higher temperature than incandescent lamps.

Explanation;

-A fluorescent lamp, is a type of electric light (lamp) that uses ultraviolet emitted by mercury vapor to excite a phosphor, which emits visible light.

-A fluorescent lamp produces less heat, thus, it is much more efficient. A fluorescent bulb can produce between 50 and 100 lumens per watt. This makes fluorescent bulbs four to six times more efficient than incandescent bulbs.

-Fluorescent lamps operate best around room temperature. At much lower or higher temperatures, efficacy decreases.

4 0
2 years ago
Read 2 more answers
Si un ciclista se mueve a una velocidad de 5 m/s y acelera 1 m/s2, a los 10 segundos su velocidad será
MrRa [10]

Answer:

A los 10 segundos su velocidad será 15 \frac{m}{s}

Explanation:

La aceleración de un objeto es una magnitud que indica cómo cambia la velocidad del objeto en una unidad de tiempo.

En otras palabras, la aceleración relaciona los cambios de la velocidad con el tiempo en el que se producen, es decir que mide cómo de rápidos son los cambios de velocidad:

  • Una aceleración grande significa que la velocidad cambia rápidamente.
  • Una aceleración pequeña significa que la velocidad cambia lentamente.
  • Una aceleración cero significa que la velocidad no cambia.

La aceleración "a" puede ser calculada mediante la expresión:

a=\frac{vfinal - vinicial}{tiempo}

En este caso:

  • a= 1 \frac{m}{s^{2} }
  • vfinal= ?
  • vinicial= 5 \frac{m}{s}
  • tiempo= 10 s

Reemplazando:

1\frac{m}{s^{2} }=\frac{vfinal - 5\frac{m}{s} }{10 s}

Resolviendo se obtiene:

1 \frac{m}{s^{2} } *10 s= vfinal - 5 \frac{m}{s}

10 \frac{m}{s} = vfinal - 5 \frac{m}{s}

10 \frac{m}{s} + 5 \frac{m}{s} = vfinal

15 \frac{m}{s} = vfinal

<u><em>A los 10 segundos su velocidad será 15 </em></u>\frac{m}{s}<u><em></em></u>

5 0
2 years ago
Other questions:
  • He is best known for publishing an almanac based on my astronomical calculations. Who is it?
    14·1 answer
  • How much work does an elephant do while moving a circus wagon 20 meters with a pulling force of 200n
    7·1 answer
  • A monkey with 4.5 kg of mass falls while swinging from a tree 10 meters above the ground. What is its GPE while it is on the tre
    15·1 answer
  • Two blocks with different mass are attached to either end of a light rope that passes over a light, frictionless pulley that is
    14·1 answer
  • A 4 kg textbook sits on a desk. It is pushed horizontally with a 50 N applied force against a 15 N frictional force.
    10·1 answer
  • An air bubble at the bottom of a lake 52.0 m deep has a volume of 1.50m^3. If the temperature at the bottom is 5.5 degree's Cels
    15·1 answer
  • Acceleration is the magnitude of average velocity true or false
    6·1 answer
  • V=d/t
    9·2 answers
  • baseball player hits a line drive estimated to have traveled 145 meters the ball leaves the bat with a horizontal velocity of 40
    13·1 answer
  • A boy pushes a stationary box of mass 20 kg with a force of 50 N.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!