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
NISA [10]
3 years ago
12

A soccer ball is kicked with an initial speed of 12m/s at a 30-degree angle above the horizontal. Calculate the horizontal veloc

ity and the initial vertical velocity. [Show all work, including the calculations with substitutions with units.]
Physics
1 answer:
dolphi86 [110]3 years ago
6 0

Answer:

<em>x=10.39 m/s</em>

<em>y = 6 m/s</em>

Explanation:

<u>Components of a Vector</u>

A vector can be expressed in several forms, including the rectangular and the polar form.

The rectangular form uses the x-y coordinates of the vector, being the right and up directions considered as positive.

The polar form uses the magnitude r and the angle it forms with the positive x-direction.

Given the polar form (r,θ), we can calculate the rectangular coordinates as follows:

x=r\cos\theta\\

y=r\sin\theta

The soccer ball is kicked with an initial speed of v=12 m/s and an angle of 30 degrees. Thus the horizontal and vertical components are:

x=12~m/s\cos 30^\circ

x=12~m/s\cdot 0.866

x = 10.39 m/s

y=12~m/s\sin 30^\circ

y=12~m/s\cdot 0.5

y = 6 m/s

You might be interested in
Compare and contrast the velocity at which X-rays and radio waves travel
posledela
<span> radio: longitudinal, light: transverse. x rays are produced by voltage and they are more penetrating Gamma Xrays Ultrasound Visible light Infrared Radiowaves. that is the order. colours are different since they absorb part of the colour spectrum & emit the rest </span>
6 0
4 years ago
Read 2 more answers
3. Categorize each statement as true or false. At the critical angle, no light is reflected and all light is transmitted.During
melamori03 [73]

Answer:

A) False

B) False

C) True

D) True

E) True

Explanation:

A) At the critical angle, no light is reflected and all light is transmitted: This statement is false because critical angle has nothing to do with whether all light is transmitted.

B) During refraction, the ray that travels through the second medium is called the incident ray: Statement is False because the ray in the second medium is called refracted ray.

C) The angle of refraction is measured from the perpendicular to the boundary between two materials: Statement is true.

D) The speed of light in a medium is always less than the speed of light in a vacuum: Statement is true because speed of light in vacuum is approximately 300,000 km/s and no other light can go higher than that.

E) The virtual image of a pencil in a glass of water is closer to the viewer than the actual pencil: Statement is true.

7 0
3 years ago
What happens to sound waves from an object as it moves toward you?
Olegator [25]

The event that happens to sound waves from an object as it moves toward you is The pitch gets higher because of an increase in wavelength.

<h3>What is sound waves?</h3>

Sound waves refer to a form of transverse wave that compress and vibrate while travelling from one medium to another thereby transferring energy.

Therefore, The event that happens to sound waves from an object as it moves toward you is The pitch gets higher because of an increase in wavelength.

Learn more about sound waves below.

brainly.com/question/13105733

#SPJ1

4 0
2 years ago
Which one of the following types of microscope gives the highest amount of magnification?
insens350 [35]
"SEM" or Scanning Electron Microscope is the one among the following choices given in the question that <span>gives the highest amount of magnification. The correct option among all the options that are given in the question is the fourth option or the last option. I hope the answer has come to your help.</span>
4 0
4 years ago
Read 2 more answers
A 3rd harmonic is being produced in a tube that is open at both ends. The tube is 3 meters long and
attashe74 [19]

The frequency of the second harmonic is 880 Hz (a pitch of A5). The speed of sound through the pipe is 350 m/sec. Find the frequency of the first harmonic and the length of the pipe. The length of an air column is related mathematically to the wavelength of the wave which resonates within it.

4 0
3 years ago
Other questions:
  • What is the maximum wavelength of incident light for which photoelectrons will be released from gallium
    6·1 answer
  • Which equation correctly relates mechanical energy, thermal energy and total of energy when there is friction present in the sys
    7·1 answer
  • What does the 4 mean in the formula 4Na2SO3?
    12·2 answers
  • Atoms of elements in the same group have the same number of [Blank] This is why they have similar chemical properties.
    8·2 answers
  • Calculate the rotational energy of a segment, given mass of the segment is 2.2 kg, moment of inertia is 0.57 kg-m2, and angular
    10·1 answer
  • Maria earned her masters degree and now offers therapy to local families through a community mental health clinic. What type of
    15·1 answer
  • Terminal velocity in a sentence
    8·1 answer
  • Im yess hi sksksks sm and then ríndalos dndk
    14·2 answers
  • Give reasons:<br>1.<br>A long spanner is used to undo a tight bolt.​
    11·1 answer
  • A car travels a distance of 400 m in 5 seconds. Calculate its average velocity.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!