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
dimaraw [331]
2 years ago
5

A train travels 8.81 m/s in a -51.0° direction.

Physics
1 answer:
Amiraneli [1.4K]2 years ago
8 0

The displacement of the train after 2.23 seconds is 25.4 m.

<h3>Resultant velocity of the train</h3>

The resultant velocity of the train is calculated as follows;

R² = vi² + vf² - 2vivf cos(θ)

where;

  • θ is the angle between the velocity = (90 - 51) + 37 = 76⁰

R² = 8.81² + 9.66² - 2(8.81 x 9.66) cos(76)

R² = 129.75

R = √129.75

R = 11.39 m/s

<h3>Displacement of the train</h3>

Δx = vt

Δx = 11.39 m/s x 2.23 s

Δx = 25.4 m

Thus, the displacement of the train after 2.23 seconds is 25.4 m.

Learn more about displacement here: brainly.com/question/2109763

#SPJ1

You might be interested in
Please help with last equation i don't understand at all!!!
GalinKa [24]
What equation?
please comment on this and type it in
5 0
3 years ago
Some thermometers contain alcohol. Alcohol is used in thermometers because
REY [17]

Answer:

Explanation:

Option C is the correct answer

5 0
3 years ago
Read 2 more answers
A wire connected to a 9 V battery records a current of 3.6 A in an ammeter. What is the resistance of the wire?
Vikki [24]

Answer:

R=2.5 ohm

Explanation:

Given that   :

Voltage difference = 9 V

Current ,I= 3.6 A

As we know that from Ohm's law

V= I R

V =Voltage difference

I=Current

R=Resistance of the wire

Now by putting the values in the above equation we get

9 = 3.6 R

R=\dfrac{9}{3.6}

R=2.5 ohm

Therefore the resistance of the wire will be 2.5 ohm.

4 0
3 years ago
sebuah cermin cembung memiliki jari-jari kelengkungan 30 cm. sebuah benda diletakkan pada jarak 30 cm di depan cermin. hitunglah
stiks02 [169]
A convex mirror has a radius of curvature of 30 cm. an object is placed at a distance of 30 cm in front of the mirror. compute the location of the shadows and shadow enlargement!
5 0
4 years ago
1. An object is moving in a straight line at constant speed. Which of the following is true?
liberstina [14]

c. II and III only (the object has 0 acceleration and the object has  constant velocity.)

Why?

Let's discard each of the given options to find the correct one(s).

<h3>- There are no forces acting on the object:</h3>

False, if an object has a constant speed, it does not mean that there are no forces acting on it, in fact, there will be always acting forces, like frictional force, gravity force, air resistance, and others.

<h3>- The object has a 0 acceleration:</h3>

True, in an object is moving at constant speed, it means that there is no acceleration, the speed will be the same all the time during motion.

<h3>- The object has constant velocity:</h3>

True, <u>if an object is moving in a straight line at constant speed</u> the velocity will be also constant. The velocity of an object is referring to its speed and its direction, if the object is moving in a straight line, the direction will be the same, so, if the speed is constant, the velocity will be also constant.

Have a nice day!

3 0
3 years ago
Other questions:
  • What is the displacement from 4 to 10 seconds? How do you know?
    15·1 answer
  • A sound wave has a frequency of 192Hz and travels the length of a football field, 91.4m in 0.267s.  What is the period?
    13·1 answer
  • Which of the following expressions uses the correct conversion factor to convert 35.7 km into the equivalent distance in miles?A
    8·1 answer
  • A baseball travels 200 metes in 6 seconds, what is the baseball’s velocity?
    7·1 answer
  • Earth, one of eight planets, resides in the spiral galaxy the Milky Way, which is one of the estimated billions of galaxies in s
    11·1 answer
  • An 20-cm-long Bicycle Crank Arm. With A Pedal At One End. Is Attached To A 25-cm-diameter Sprocket, The Toothed Disk Around Whic
    7·1 answer
  • Please tell me if this looks right.
    6·1 answer
  • Choose the sequence of energy forms that best fits each item.
    11·2 answers
  • Is a football tackle an elastic or inelastic collision and why?
    8·1 answer
  • Why am i getting so many spam calls on my cell phone.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!