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
Licemer1 [7]
3 years ago
13

Javelin at 72 meters/second. he throws it at an angle of 22 degrees. how fast is he throwing it in the x-direction in meters/sec

ond?
Physics
1 answer:
Elis [28]3 years ago
7 0
Assume this is 22 degrees from the horizontal (x).
A vector can always be split into components - in this case we can think of the world in two dimensions, meaning the 72ms-1 has a vertical and a horizontal component. We therefore know the hypotenuse of the triangle (the overall velocity) and the angle from the ground. Hence we can use trigonometry to solve this problem.

We know x and the hypotenuse, and we want to know the magnitude of the adjacent side (horizontal), therefore we can use cosx=adj/hyp

Substituting:

Cos(22) = adj/72
Adj = 72cos22 = 66.8ms-1 = 67ms-1 to 2sf
You might be interested in
Which organic compound forms much of the structure of cells?
o-na [289]

Which organic compound forms much of the structure of cells?

Answer: A Carbohydrates

4 0
2 years ago
Read 2 more answers
What circumstance would allow an officer to search a home even if they didn’t have a warrant?
Ipatiy [6.2K]

Answer:

A

Explanation:

The officer would have had permission regardless of anything else, kind of like letting someone into your house.

5 0
3 years ago
An amusement park ride consists of a rotating circular platform 8.26 m in diameter from which 10 kg seats are suspended at the e
VashaNatasha [74]

To solve this problem we will begin by finding the necessary and effective distances that act as components of the centripetal and gravity Forces. Later using the same relationships we will find the speed of the body. The second part of the problem will use the equations previously found to find the tension.

PART A) We will begin by finding the two net distances.

r = \frac{8.26}{2} = 4.13m

And the distance 'd' is

d = lsin\theta

d = 1.14 sin 16.2\°

d = 0.318m

Through the free-body diagram the tension components are given by

Tcos\theta = mg

Tsin\theta = \frac{mv^2}{R}

Here we can watch that,

R = r+d

Dividing both expression we have that,

tan\theta = \frac{v^2}{Rg}

Replacing the values,

tan(16.2) = \frac{v^2}{(4.13+0.318)(9.8)}

v = 4.83371m/s

PART B) Using the vertical component we can find the tension,

Tcos\theta = mg

T = \frac{mg}{cos\theta}

T = \frac{(10+26.2)(9.8)}{cos(16.2)}

T = 369.42N

6 0
3 years ago
A force of 20N pushes an object of mass 5.0kg along a rough surface of 5.0N​
Alika [10]

Answer:

I'm sorry, I don't think there is any answer to give seeing as no question has been asked

7 0
3 years ago
Read 2 more answers
Please help! I will give brainliest! Also can you please explain why it’s that answer. Thanks!
Veronika [31]

Answer:

B

Explanation:

Forces are pushes or pulls. They can be balanced or unbalanced. If unbalanced they can change the shape of objects and change the way they are moving (speed-wise)

5 0
3 years ago
Other questions:
  • A 10 m long high tension power line carries a current of 20 A perpendicular to Earth's magnetic field of 5.5 x10⁻⁵ T. What is th
    12·1 answer
  • When you add heat energy the molecules move ______ and _____
    9·2 answers
  • Half-Life refers to radiation levels<br> true or false
    7·1 answer
  • The area of the maxila where the teeth attach is called the ??
    8·1 answer
  • What is the density of a rock with a mass of 10 grams and a volume of 5 ml
    9·1 answer
  • Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. In a typical strike, the chameleon'
    9·1 answer
  • The speed of a light wave in a certain transparent material is 0.589 times its speed in vacuum, which is 3.00 x108 m/s. When yel
    9·1 answer
  • Ayudaaa no se como resolverlo con procedimiento :(
    5·1 answer
  • Please help.....Which of the following is most likely the distance between the Milky Way and another galaxy?
    12·1 answer
  • In 1656, the Burgmeister (mayor) of the town of Magdeburg, Germany, Otto Von Guericke, carried out a dramatic demonstration of t
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!