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
Svet_ta [14]
3 years ago
5

A train travels north at a speed of 50 m/s.

Physics
1 answer:
Gala2k [10]3 years ago
8 0

The apparent velocity is B) 48 m/s north

Explanation:

Here we have a problem of relativity of velocities.

In fact, the train is travelling north at a speed of

v_t = 50 m/s

where this velocity is measured with respect to the ground.

At the same time, a passenger on the train is walking towards the rear (so, south) at a velocity of

v'=2 m/s

where this velocity is measured with respect to the train, which is in motion in the opposite direction.

Therefore, the apparent velocity of the passenger with respect to an observer standing on the ground is:

v=V_t - v' = 50 - 2 = 48 m/s

And the direction is north, since this number is positive.

Learn more about velocity:

brainly.com/question/5248528

#LearnwithBrainly

You might be interested in
What is the purpose of the report​
AfilCa [17]

Answer:

The purpose of report : Reports communicate information which has been compiled as a result of research and analysis of data and of issues .

5 0
2 years ago
Read 2 more answers
susan and joe push a table 18 meters down a hall by exerting a force of 200 newtons (n). what is the total amount of work done o
prisoha [69]

Answer:

3600joules

Explanation:

formula :W=FS

W=work done (J)

F=force (N)

S=displacement moved in the direction of force (m)

200N×18m

=3600J

3 0
2 years ago
HELP ME, I'M BEING TIMED
m_a_m_a [10]

Answer:

i think c

Explanation:

because cars run on mechanical energy and solar powered means its by the sun which is light energy

7 0
2 years ago
Read 2 more answers
The speed of a moving bullet can be deter-
Bad White [126]

Answer:

<em>v = 381 m/s</em>

Explanation:

<u>Linear Speed</u>

The linear speed of the bullet is calculated by the formula:

\displaystyle v=\frac{x}{t}

Where:

x = Distance traveled

t = Time needed to travel x

We are given the distance the bullet travels x=61 cm = 0.61 m. We need to determine the time the bullet took to make the holes between the two disks.

The formula for the angular speed of a rotating object is:

\displaystyle \omega=\frac{\theta}{t}

Where θ is the angular displacement and t is the time. Solving for t:

\displaystyle t=\frac{\theta}{\omega}

The angular displacement is θ=14°. Converting to radians:

\theta=14*\pi/180=0.2443\ rad

The angular speed is w=1436 rev/min. Converting to rad/s:

\omega = 1436*2\pi/60=150.3776\ rad/s

Thus the time is:

\displaystyle t=\frac{0.2443\ rad}{150.3776\ rad/s}

t = 0.0016 s

Thus the speed of the bullet is:

\displaystyle v=\frac{0.61}{0.0016}

v = 381 m/s

7 0
3 years ago
What factor affects sensation
Gnesinka [82]

Answer:

D physiological condition

Explanation:

Sensation and perceptions are complimentary to each other but have different roles within the brain. Sensations are the process of experiencing the world with the five senses and sending that information to the brain. Perceptions are the way we interpret sensations.

8 0
3 years ago
Other questions:
  • Like his parents, Thomas is short, stocky, and heavyset. Although he exercises regularly and eats a well-balanced meal, his body
    9·2 answers
  • Physics Question, Please Help:
    11·1 answer
  • Racewalking involves more impact than running. true false
    13·2 answers
  • You are driving on the interstate and see a sign that says the speed limit is 50 miles per hour.
    9·2 answers
  • A conductor carries a current that is decreasing exponentially with time. The current is modeled as ????=????0????−????/???? , w
    10·1 answer
  • What is the chemical formula for ammonium hydroxide
    9·1 answer
  • What is the amount of work done in a certain amount of time known as?
    11·1 answer
  • A bucket is filled partly with water such that its combined mass is 2.5 kg. It is tied to a rope and whirled in a circle with a
    5·1 answer
  • In order for a ball to move upward, the initial velocity of the ball must be greater than _____.
    10·1 answer
  • 5. Your friend claims that the Moon’s repeated orbit around Earth causes the cycle of the Moon’s phases.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!