All categories

3 years ago

How can motion be described and measured

Physics

2 answers:

PolarNik [594]3 years ago

3 0

Answer:

Motion can be described "...in terms of displacement, distance, velocity, acceleration, speed, and time," according to Wikipedia. The main feature that measures motion is momentum or speed.

Hope this helped! Let me know if you have any other questions. :)

kramer3 years ago

3 0

Answer:Motion is relative and can be described in terms of speed, position, time, distance, velocity.

Explanation: Motion can simply be described as the change in location or position of an object.It is subdivided into rotational, oscillatory and translational.

Motion of a body can be observed by attaching a subject of reference to an observer and measuring the change in position of the body relative to the subject.

Motion is measured by putting into reference momentum, velocity, speed, mass, distance and time.

You might be interested in

This question is about waves. I need help. If you answer can you explain why is that answer, thanks.

Dimas [21]

Answer:

b or d

Explanation:

i think ya sorry

4 0

3 years ago

Mercury is 0.39 AU from the sun. What is its distance from the sun in kilometers?

qaws [65]

Answer:

0.39AU = 58344000 [km] or 58.500.000 [km]

Explanation:

This is a problem that consists simply in converting units:

AU = astronomic unit

$1 [AU] = 1.496*10^{8} [km]\\0.39 [AU] = x\\\\Therefore\\x = \frac{0.39*1.496*10^{8} }{1} \\x = 58344000[km]$

8 0

3 years ago

A constant amount of charge passes through a conductor. How is current affected if the same amount of charge passes in less time

baherus [9]

Answer:

B. The current increases.

Explanation:

As we know that rate of flow of charge through the conductor is known as electric current

So we have

$i = \frac{q}{t}$

here we know that charge Q flowing through the conductor is constant while the time in which it passes through it is decreased

so we can say that the ratio of charge and time will increase

so here we have

$i = increased$

So correct answer will be

B. The current increases.

4 0

4 years ago

Which of the following is not a

marissa [1.9K]

Answer:

polarization

Explanation:

6 0

3 years ago

Water pressurized to 3.5 x 105 Pa is flowing at 5.0 m/s in a horizontal pipe which contracts to 1/3 its former area. What are th

masha68 [24]

Answer:

the pressure after contraction is 2×10^5 Pa

the speed after contraction is 15m/s

Explanation:

We were given Pressure P to be 3.5 x 10^5 that is Flowing with speed of 5.0 m/s,

For us to calculate pressure we need to calculate the area first as;

Let initial Area = A₁

And Final area A₂

We were told that in a horizontal pipe it contracts to 1/3 its former area. Which means

A₂= A₁/3.................

V₁ is the speed

the pressure and speed of the water after the contraction can be calculated using equation of continuity below

A₂V₂ = A₁V₁

But

If we substitute given value in the expresion we have

V₂ = (3A *5)/A

V₂ = 15m/s

Therefore, the speed after contraction is 15m/s

Now we can calculate the pressure using

Bernoulli's equation

p₁ + ½ρv₁² + ρgh₁ = p₂ + ½ρv₂² + ρgh₂

But we know that the pipe is horizontal, then "h" terms cancel out then

p₁ + ½ρv₁² = p₂ + ½ρv₂²

Making P₂ subject of formula we have

p₂ = 0.5ρ( V ₁² - v₂² ) + P₁

P₂=. 0.5 × 1000 (5² -15² ) + 3*10^5

=2×10^5 Pa

Therefore, the pressure after contraction is 2×10^5 Pa

7 0

3 years ago