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3 years ago

How does velocity change in a circular motion

Physics

1 answer:

djverab [1.8K]3 years ago

6 0

Explanation:

For an object to maintain circular motion it must constantly change direction. Since velocity is a vector, changes in direction constitute changes in velocity. A change in velocity is known as an acceleration. The change in velocity due to circular motion is known as centripetal acceleration.

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An Earth satellite needs to have its orbit changed so the new orbit will be twice as far from the center of Earth as the origina

horsena [70]

Answer:

False.

Explanation:

From Kepler's Third Law of plenetary motion, we know that:

<em>"The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit."</em>

Or, as expressed in mathematical terms:

$\frac{a^3}{T^2}=constant$ , where <em>a</em> is the semi-major axis of the orbit (the distance from the center), and <em>T </em>is the orbital period of the satellite.

From this expression we can clearly see that if the orbit's semi-major axis is doubled, orbital period will be $\sqrt{8}$ times longer to compensate the variation.

5 0

3 years ago

The speed of propagation of electrical signals in a nerve cell depends on the diameter of the axon (nerve fiber). If the nerve c

gayaneshka [121]

Answer:

61 ms

Explanation:

Given that

Length of the nerve call connecting the spinal cord to your feet, s is 1.1 m

Speed of the impulse of the nerve, v = 18 m/s

Time taken by the nerve to travel the distance, t = ?

In solving this, we'd apply the very most basic formula in physics. Formula of speed, with respect to time and distance.

Speed, v = distance, s / time, t

time, t = distance, s / speed, v

time, t = 1.1 / 18

time, t = 0.061 s, converting to milliseconds, we have, time, t = 61 ms

6 0

2 years ago

The highest freefall jump on record is from a height of almost 38,000 m. At this height, the acceleration of gravity is slightly

lina2011 [118]

Increasing his acceleration will impact his velocity and rate of displacement covered in that as the speed increases due to the increased rate of acceleration, the rate of air resistance also increases.

<h3>What is air resistance?</h3>

Air resistance is a force created by air. When an item moves through the air, the force operates in the opposite direction.

When a diver descends, the force of air resistance acts to counteract the force of gravity. As the skydiver falls faster and faster, the quantity of air resistance grows until it equals the magnitude of gravity's force.

A balance of forces is achieved when the force of gravity equals the force of air resistance, and the skydiver no longer accelerates. The skydiver reaches what is known as terminal velocity.

Learn more about air resistance:

brainly.com/question/16859536
#SPJ1

4 0

1 year ago

What is moment? Write down the law of moment.A long spanner is used to unscrew the tight nut.Why?

vfiekz [6]

Answer:

Moment is the product of force and its perpendicular distance from a point along its line of action.

The net moments on clockwise and anticlockwise is zero at a point.

The net force applied on a spanner handle is equal to the moment of the rotation

3 0

2 years ago