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bazaltina [42]
3 years ago
12

Explain the topic of velocity

Physics
1 answer:
ElenaW [278]3 years ago
8 0

Answer:

V = x/t

where:

x = distance [m]

t = time [s]

V = velocity [m/s]

Explanation:

Speed is defined as the distance travelled by a body in a given time interval. The velocity or speed is a vector, that is, it has magnitude and direction.

By virtue of its vector character, the direction of the displacement and the module, which is called speed, must be considered to define the velocity.

<u>Average speed</u>

The average speed is defined as the change of position over a given time interval. It is calculated by dividing the displacement vector (Δx) between the time interval (Δt) used.

<u>Instant speed</u>

Instantaneous velocity is a vector tangent to the trajectory, corresponding to the derivative of the vector position relative to time.

It allows to know the speed of a mobile that moves on a trajectory when the interval of time is infinitely small, being then the space traveled also very small, representing a point of the trajectory. Instant velocity is always tangent to the trajectory.

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Write one to two sentences that summarize Bernoulli's principle.
Ierofanga [76]

Answer and Explanation:

Bernoulli's Principle deals with Fluid dynamics and fluid includes both liquid and gas.

The Principle gives an inverse relation between the speed or velocity of the fluid and the pressure of the fluid. It gives the speed or velocity of the liquid over varying pressure.

Bernoulli's Principle states that for a given fluid,the low pressure region will have high speed or velocity and high pressure region will have low speed or velocity

4 0
3 years ago
Help please, i am lost.
AURORKA [14]

Answer:

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Explanation:

4 0
3 years ago
A body of mass 8 kg moves in a (counterclockwise) circular path of radius 10 meters, making one revolution every 10 seconds. You
Sav [38]

Answer:

Centripetal force is equal to 31.55 N

Explanation:

We have given mass of the body m = 8 kg

Radius of the circular path r = 10 m

It is given that it makes 1 revolution in 10 seconds

Distance traveled in 10 seconds is equal to d=2\pi r=2\times 3.14\times 10=62.8m

Velocity is equal to velocity=\frac{distance}{time}=\frac{62.8}{10}=6.28m/sec

We have to find the centripetal force

Centripetal force is equal to F=\frac{mv^2}{r}=\frac{8\times 6.28^2}{10}=31.55N

So centripetal force will be equal to 31.55 N

8 0
3 years ago
Our solar system formed from a huge cloud of dust and gas called a _____.
Mumz [18]
Our solar system formed from a huge cloud of dust and gas called a
c. solar nebula

Based on the nebular hypothesis, our solar system formed from hydrogen gas and interstellar dust. The gas and the dust contracted and formed the early stage of the sun.
7 0
3 years ago
Read 2 more answers
5 examples of how intertia is used in real life
Mariulka [41]

Answer:

- your body moving forwards when sudden brakes/force is applied e.g. sudden braking in a car

- feeling a backwards force when something moves quickly from rest e.g a bus

- when you stir a cup of tea, it continues to swirl for a short period of time even though you have stopped

- when shaking a tree, it's leaves or fruit fall down

- satellites which move due to the inertia of motion

hope this helped :)

8 0
3 years ago
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