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
sergeinik [125]
3 years ago
7

Help plz I’ll give you the brainlist

Physics
1 answer:
MissTica3 years ago
8 0

Answer:

I need to obtain the brainlist

Explanation:

Give it to me now peasant

You might be interested in
You are beautiful have a nice day <3​
Tresset [83]

Answer:

I am?

Explanation:

7 0
3 years ago
Read 2 more answers
I need help ASAP doing a test rn
Irina-Kira [14]

Answer:

Thinking also friction force

Explanation:

7 0
3 years ago
Read 2 more answers
HELP MEH QUICK PLEASE
lozanna [386]

Answer:

D) a Battery

Explanation:

The best real-life example of direct current is a battery. Batteries have positive and negative terminals on a battery, the electrons in the wires will begin to flow to produce a current.

6 0
3 years ago
baseball is hit into the air at an initial speed of 37.2 m/s and an angle of 49.3 ° above the horizontal. At the same time, the
Agata [3.3K]

Answer:

The average speed of the fielder is 5.24 m/s

Explanation:

The position vector of the ball after it was hit can be calculated using the following equation:

r = (x0 + v0 · t · cos α, y0 + v0 · t · sin α + 1/2 · g · t²)

Where:

r = position vector at time t.

x0 = initial horizontal position.

v0 = initial velocity.

t = time.

α = launching angle.

y0 = initial vertical position

g = acceleration due to gravity (-9.8 m/s² considering the upward direction as positive).

Please, see the attached figure for a graphical description of the problem.

When the ball is caught, its position vector will be (see r1 in the figure):

r1 = (r1x, 0.873 m)

Then, using the equation of the position vector written above:

r1x = x0 + v0 · t · cos α

0.873 m = y0 + v0 · t · sin α + 1/2 · g · t²

Since the frame of reference is located at the point where the ball was hit, x0 and y0 = 0. Then:

r1x = v0 · t · cos α

0.873 m = v0 · t · sin α + 1/2 · g · t²

Let´s use the equation of the y-component of r1 to obtain the time of flight of the ball:

0.873 m = 37.2 m/s · t · sin 49.3° - 1/2 · 9.8 m/s² · t²

0 = -0.873 m + 37.2 m/s · t · sin 49.3° - 4.9 m/s² · t²

Solving the quadratic equation:

t = 0.03 s and t = 5.72 s.

It would be impossible to catch the ball immediately after it is hit at t = 0.03 s. Besides, the problem says that the ball was caught on its way down. Then, the time of flight of the ball is 5.72 s.

With this time, we can calculate r1x which is the horizontal distance traveled by the ball from home:

r1x = v0 · t · cos α

r1x = 37.2 m/s · 5.72 s · cos 49.3°

r1x = 1.39 × 10² m

The distance traveled by the fielder is (1.39 × 10² m - 1.09 × 10² m) 30.0 m.

The average velocity is calculated as the traveled distance over time, then:

average velocity = treveled distance / elapsed time

average velocity = 30.0 m / 5.72 s = 5.24 m/s

8 0
3 years ago
A man stands still on a moving walkway that is going at a speed of 0.3 m/s to the south. What is the velocity of the man accordi
RSB [31]
The velocity is 0.3 m/s South.
3 0
3 years ago
Read 2 more answers
Other questions:
  • In 1990, a pizza with a radius of 18.0 m was made in South Africa. Suppose you make an air-filled capacitor with parallel plates
    9·1 answer
  • ​what characteristic of uranus makes it stand out from all the other jovian planets?
    10·2 answers
  • Where is the center of gravity if the 9.00 kg mass of the barbell itself is taken into account?
    10·1 answer
  • Suppose that on a hot and sticky afternoon in the spring, a tornado passes over the high school. If the air pressure in the lab
    14·1 answer
  • The graph shows the heating curve of water.
    11·2 answers
  • If a weather system is moving from the Pacific coast to North Carolina,
    8·1 answer
  • Jane is collecting data for a ball rolling down a hill. she measure out a set of different distances and then proceeds to use a
    9·1 answer
  • NEED HELP IS THERE SOMEONE CAN HELP ME PLS :)
    6·1 answer
  • Two objects, A and B, have the same volume and are completely submerged in a liquid, although A is deeper than B. Which object,
    11·1 answer
  • A bike travels at 3.0 m/s, and then accelerates to a speed of
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!