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
vivado [14]
3 years ago
15

A train travels 63 kilometers in 2 hours, and then 56 kilometers in 3 hours. What is its average speed? i need the answer and un

its please
Physics
1 answer:
kolbaska11 [484]3 years ago
4 0
The average speed is the ratio between the total space and the total time of the motion:
v= \frac{S_{tot}}{t_{tot}}
The total space is 
S_{tot}=63 km + 56 km = 119 km
while the total time is 
t_{tot}=2h+3h = 5h
So, the average velocity is
v= \frac{119 km}{5 h} =23.8 km/h


We can also rewrite it in m/s. The total space is S_{tot}=119000 m, while the time is t_{tot}=5h\cdot 3600 s/h = 18000s, and so
v= \frac{119000m}{18000s}=6.6 m/s
You might be interested in
Which example gives all the necessary information to describe motion scientifically
VikaD [51]
Correct option is=A because 25mph means=25miles per hour
5 0
3 years ago
Read 2 more answers
What kinds of information does the ALMA radio telescope provide?
zimovet [89]

Answer:

ALMA is a trans-formative radio telescope that can study cosmic light that straddles the boundary between radio and infrared. Most objects in the Universe emit this kind of energy, so the ability to detect it has been a driver for astronomers for decades.

Explanation:

7 0
3 years ago
What's the equivalent unit and physical quantity of ampere.second
vlada-n [284]
Coulomb. c is the unit.
8 0
4 years ago
Mass (kg) Force (N)
Keith_Richards [23]

Answer:B

Explanation:

Acceleration=force/mass

Acceleration=25/5=5

Acceleration=50/10=5

Acceleration=75/15=5

Acceleration=100/20=5

3 0
3 years ago
When ever nitrogen is used to pressurize or blow debris out of the system the nitrogen?
sladkih [1.3K]
Only vapor should be used
7 0
2 years ago
Other questions:
  • How much heat is required to change 1.0 kg of ice, originally at -20.0 degrees celcius, into steam at 110.0 degrees celcius? Ass
    15·1 answer
  • If two planets are close enough to each other do they have a greater gravitational pull then two planets that are farther away?
    9·2 answers
  • The tendency of an object to resist changes in it motion​
    10·1 answer
  • Sedimentary rocks are the only rocks that can potentially containa.fossils.c.fractures.b.minerals.d.faults. Please select the be
    15·2 answers
  • A 0.2kg mass attached to the end of a spring is whirled in a vertical circle by a student. At some position, the mass experience
    12·1 answer
  • Carmen is heating some water and trying to measure the temperature of water using a Celsius thermometer. Which measurement can s
    7·2 answers
  • 10Ω resistor and a 5 Ω are connected in parallel. This pair is then connected in series in with another 4 Ω resistor. What is th
    14·1 answer
  • A person walks at a speed of 6 km/h from point A to point B. If he improves his pace by 1.5 km/h, he will arrive 1 hour earlier.
    14·1 answer
  • Sandra takes a class field trip to a geology museum. She sees an interesting sample of igneous rock. She wonders if the material
    6·1 answer
  • Please help me!<br>each form of a characteristic is called what?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!