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nlexa [21]
3 years ago
11

Which statement about kinetic and static friction is accurate?

Physics
1 answer:
vesna_86 [32]3 years ago
6 0

Answer:

Static friction is greater than kinetic friction, but they both act opposite the applied force.

Explanation:

Newton's 3rd law states that every action has and equal but opposite reaction.

If an object has static friction, that means it stays in one spot, and it takes a great amount of force to get it moving.

Once the object is moving it has kinetic friction, but it's easier to keep it moving unless you are trying to stop it.

The equal but opposite reaction to something moving it is stopping it, and the equal but opposite reaction to stopping something is moving it.

The same amount of force used to move/stop something is used to stop/move it.

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How are the surface of Mercury and Mars similar to the surface of the Earth?
scZoUnD [109]

Answer:

The terrestrial planets all have rocky surfaces that feature mountains, plains, valleys and other formations. ... Mars has very low atmospheric pressure, and Mercury has almost none, so craters are more common on these planets.

Explanation:

8 0
2 years ago
Jennifer works for an automaker and tests the safety performance of cars. she watches a 2,000-kilogram car crash into a wall wit
Kipish [7]

The acceleration of the car at impact is 15m/s².

<h3>What is Newton's Second Law of Motion?</h3>

Newton's second law provides a precise explanation of the modifications that a force can make to a body's motion. According to this, a body's momentum changes at a rate that is equal to the force acting on it over time in both magnitude and direction. A body's momentum is equal to the sum of its mass and velocity. Similar to velocity, momentum has both a magnitude and a direction, making it a vector quantity.

acceleration - rate of change of velocity with time, both in terms of speed and direction. A point or object going straight forward is accelerated when it accelerates or decelerates.

There are three types of accelerated motions :

  • uniform acceleration,
  • non-uniform acceleration
  • average acceleration.

express all the units in their most basic form.

kg, newton = kg*m/s², acceleration =m/s²

\frac{ 30000 kg*m/s^{2} }{ 2000 kg}  = 15m/s^{2}

to learn more about Newton's Second law of Motion - brainly.com/question/13447525

#SPJ4

3 0
1 year ago
Why does the shape of the lens in your eye change?
Nina [5.8K]

The Lens Changes Shape to Focus Near Objects. Light rays from objects that are close to the eye are not parallel. Therefore, the eye must bend them more in order to focus the rays on the retina. To accomplish this, the lens change shape.

<h3>Hope this helps</h3>

3 0
2 years ago
Read 2 more answers
Consider the space between a point charge and the surface of a neutral spherical conducting shell. If the charge sits at the cen
mr Goodwill [35]

Answer: True

Explanation: A neutral spherical conducting shell, has no net electric field inside it. The neutral conductor separates its positive and negative charges, when it is kept in a region of electric field, so that the net electric field inside the conductor becomes zero

Let us assume that a spherical Gaussian sphere surrounding the cavity and inside the conductor.

Since electric field inside the conductor doesn't exists, therefore the net electric flux through the Gaussian surface is zero.

From Gauss's law, when net electric flux through the closed surface is zero, the net enclosed charge should be zero

In order to make net enclosed charge as zero inside the metal, the interior surface of the conductor acquires a charge of -q

Since the interior surface of the conductor acquired -q charge, in order to maintain the electrical neutrality of the conductor, the exterior surface of the conductor acquires +q charge on it

8 0
3 years ago
Ionizing radiation is radiation of sufficient energy to produce charged atoms. All of these describe ionizing radiation. is radi
Talja [164]

Answer:

<em>Is radiation of sufficient energy to produce ions.</em>

<em>Is radiation of sufficient energy to remove electrons from atoms.</em>

Explanation:

Ionization radiation is a radiation that travels at a high speed, and possesses sufficient speed to knock electrons off of an atom or a molecule, ionizing the atom. Ionization radiation can be made of travelling subatomic particles, or an electromagnetic wave with high energy, usually the types found at the end of the electromagnetic spectrum. Some subatomic particles that produce ionization are alpha particle, beta particles, and neutron. The electromagnetic waves with ionization abilities includes Gamma rays. -rays, and high energy ultraviolet rays.

3 0
3 years ago
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