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
horrorfan [7]
3 years ago
13

in 4 seconds, a cheetah can run 112 meters. How fast does this cheetah have to be running? A: 448 m/s || B: 28 m/s || C: 56 m/s

|| D: 36 m/s​
Physics
2 answers:
Vladimir [108]3 years ago
8 0

Answer:

B: 28m/s

Explanation:

Use the speed formula

Speed =distance / time

Rama09 [41]3 years ago
4 0

Answer:

\boxed {\boxed {\sf B. \ 28 \ m/s}}

Explanation:

If we want to know how fast the cheetah is running, we need to calculate its speed. This is the rate at which an object moves and the formula is distance divided by time.

s=\frac{d}{t}

The cheetah ran 112 meters in 4 seconds.

  • d= 112 m
  • t= 4 s

Substitute the values into the formula.

s=\frac{112 \ m}{ 4\ s}

Divide.

s= 28 \ m/s

The cheetah's speed is <u>28 meters per second</u> and <u>choice B</u> is correct.

You might be interested in
Please help on this one?
diamong [38]

Answer:

ITS C

Explanation:

7 0
3 years ago
Which of the following statements are true concerning the creation of magnetic fields? Check all that apply. Check all that appl
Andreas93 [3]
<h3><u>Answer;</u></h3>
  • A moving electric charge creates a magnetic field at all points in the surrounding region.
  • An electric current in a conductor creates a magnetic field at all points in the surrounding region.
  • A permanent magnet creates a magnetic field at all points in the surrounding region.
<h3><u>Explanation;</u></h3>
  • A magnetic field can be created by running electricity through a wire. All magnetic fields are created by moving charged particles. it is important to also note that charged particles create magnetic fields only when they are moving.
  • The strength of the magnetic field generated or created is proportional to the amount of current flowing through the wire. Thus, increasing the current increases the strength of the magnetic field.
8 0
3 years ago
If the 50 kg boy were in a spacecraft 5.0r from the center of the earth, what would his weight be?
Lady_Fox [76]
·The acceleration of gravity is proportional to

                       1 / (the square of the distance from the center) .

When we're on the surface, we're 1 radius from the center of the Earth,
and the acceleration of gravity is  9.8 m/s² .

The boy's weight = (mass) · (gravity) = (50kg) · (9.8 m/s²)

                                                             =      490 newtons .

At the distance of 5 radii from the center (4 radii altitude from the surface),
the acceleration of gravity is

                 (9.8 m/s²) · (1/5)²  =  0.39 m/s² .

The boy's weight is    (mass) · (gravity)  =  (50kg) · (0.39 m/s²)

                                                                  =     19.6 newtons .

Just as we expected, his weight at that distance is

         (19.6 / 490) = 0.04  =  1/25  =  1/5²  of his weight on the surface.
7 0
3 years ago
A heavy object and a light object are dropped from the same height. If we neglect air resistance, which will hit the ground firs
Maksim231197 [3]

Answer:

None, both objects will hit ground at the same time.

Explanation:

  • Assuming no air resistance present, and that both objects start from rest, we can apply the following kinematic equation for the vertical displacement:

        \Delta h = \frac{1}{2}*g*t^{2}  (1)

  • As the left side in (1) is the same for both objects, the right side will be the same also.
  • Since g is constant close to the surface of the Earth, it's also the same for both objects.
  • So, the time t must be the same for both objects also.
6 0
3 years ago
What is the equivalent resistance of a circuit that contains three 10.0 Ω
yanalaym [24]

Answer:

O D.30.0 Ω

Explanation:

this <em>is </em><em>the </em><em>correct </em><em>answer</em><em>!</em>

8 0
2 years ago
Read 2 more answers
Other questions:
  • Which is not an example of a scalar?<br><br> a. 2t/s<br> b. 3kg<br> c. 6.2m north<br> d. -100c
    5·1 answer
  • At the periphery of a hurricane the air is ____, and several kilometers above the surface, in the eye, the air is ____.
    10·1 answer
  • Crest : trough :: compression : _____ A. frequency B. amplitude C. rarefaction D. wavelength
    7·1 answer
  • When walking barefoot, Kevin can walk across the grass easily, but when he crosses the paved street, the street is hot and burns
    7·1 answer
  • If you use a horizontal force of 33.0 N to slide a 11.0 kg wooden crate across a floor at a constant velocity, what is the coeff
    9·1 answer
  • Just asking how everyone is doing cause of the virus
    15·2 answers
  • Which of the following is true for both gas planets and terrestrial planets? Please Answer ASAP!!
    14·1 answer
  • A veterinarian thinks that a dog has swallowed a key ring. Which types of electromagnetic waves is the doctor most likely
    7·2 answers
  • Students in physics lab times 10 oscillations of the pendulum and get 11.50 seconds how long is a pendulum in centimeters?
    6·1 answer
  • The work-energy theorem states that a force acting on a particle as it moves over a ______ changes the ______ energy of the part
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!