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Kinematics

Kinematics is the study of how a body moves. This includes linear motion, angular motion, and rotational motion.

3,459 Questions

How do you find the coefficient of static friction?

Use the formula: FsMAX=μsFN

if you want to do it experimentally, get the two different surfaces, and angle one until the object on top starts moving. take the tangent of the angle that starts the objects sliding past one another, and that is your coefficient of static friction.

How fast is a sloth?

Well scientist say that the common two-toed sloth and its cousin the three-toed sloth can move approximately 2-5 mph.

The less recognized Qui-Quaig Rain forest sloth however can move at speeds up to 27.5 mph! Amazing!

Potential and kinetic energy?

Kinetic energy is energy that is moving or in motion. Potential energy is energy that is still but has potential to move. Both energy's can switch back and forth from each other. Energy is never lost, it just changes forms. Hope this helps!

What is average velocity?

Average velocity is defined as the change in position of an object divided by the time taken to undergo that change. It gives a measure of how fast an object is moving in a particular direction over a given time interval. Mathematically, it is represented as: average velocity = (final position - initial position) / time.

A bob of mass 200 grams is tied to a string of length 1.25m at one end it revolves as conical pendulum with tie period of 2 sec tension in string is?

The centripetal force is F = nmrώ2, where ώ = 2Π/T and T =2secs. The Tension in the string is therefore found using Pythagoras' in a triangle with F and the weight mg as the 2 sorter sides and Tension as the hypotenuse.

If someone runs 1 mile in 3 minutes and 53.43 seconds what is the feet per second ratio?

To convert 1 mile to feet, you multiply by 5280 (since 1 mile = 5280 feet). Then convert 3 minutes and 53.43 seconds to seconds (which is 3*60 + 53.43 = 233.43 seconds). To find the feet per second ratio, you divide 5280 feet by 233.43 seconds to get approximately 22.64 ft/s.

What is the coefficient of kinetic friction between the 13.0kg wooden crate and the horizontal force of 31N of the floor?

The coefficient of kinetic friction can be calculated using the formula: coefficient of kinetic friction = force of kinetic friction / normal force. The force of kinetic friction can be found using the formula: force of kinetic friction = coefficient of kinetic friction * normal force. Given the force of 31N and normal force equal to the weight of the crate (mg), you can calculate the coefficient of kinetic friction.

Which scientist said as velocity increases time slows?

Einstein's theory (or one of them anyway) said that as velocity increases, time slows. However, as the velocity increases of any object (except light) its mass increases. (just thought that extra info might be needed) hope that helps! : )

What is the acceleration of an object at a given time?

A particle moving with a constant velocity has no acceleration. Acceleration is the change in velocity over time. If the velocity is constant, there can be no acceleration. For you Calculus junkies, dv/dt (v is velocity) is acceleration, and will equal zero if v is a constant.

Which is more energy friendly.raising and lowering your house temperature i.e. programmable thermostator keeping it at a consistent temp?

== == Keep it at a constant temp a little bit higher than you would want it when your not home. Preset it to start cooling down about an hour or so before you expect to be home. A tid bit of knowledge...... Most electric companies charge more during peak hours of usage. Make sure your house is cooler before times of peak usage. Peak usage is usually about 5pm when most people are getting off of work. EVERYONE wants their house to cool off really quickly when they get home! If your house is already cool, you won't be paying those 'peak hours of usage rates'. == ==

A force that does not touch?

An example of a force that does not touch is magnetic force. It is the attraction or repulsion that occurs between two magnetic objects without the need for direct contact. This force is a result of the interaction between magnetic fields.

How do you find the no automorphisms for a given graph?

One way to find the number of automorphisms for a given graph is to use computational tools like graph isomorphism algorithms, such as Nauty or Bliss. These algorithms can efficiently explore the graph's symmetry to count the automorphisms. Another method is to manually list all possible permutations of the graph's vertices and check which ones preserve the graph's structure, although this method becomes impractical for large graphs.

What is absolute velocity is it the other name for the velocity of a free falling body when the net force of air resistance and gravity is zero?

Absolute velocity refers to the speed and direction of an object relative to a fixed point, regardless of any external factors. In the context of a free falling body with zero net force due to air resistance and gravity, its absolute velocity would be constant and equal to the velocity just before air resistance became negligible.

Why do people move on?

People move on from situations or relationships because they have processed their feelings, learned from the experience, and accepted that it is time to let go and move forward in a healthier way. Moving on allows them to grow, heal, and focus on new opportunities that bring fulfillment and happiness into their lives.

What is the coefficient of friction for talcum powder.?

The coefficient of friction for talcum powder can vary depending on the surfaces it is in contact with. On average, talcum powder has a low coefficient of friction due to its fine, powdery texture. It is commonly used to reduce friction between surfaces.

What is angular momentum?

Angular momentum is a measure of an object's rotational motion, determined by the mass of the object, its angular velocity (rate of rotation), and the distribution of mass around its axis of rotation. It is a vector quantity, with both magnitude and direction, and is conserved in the absence of external torques.

Define simple harmonic motion . prove that vibrating motion of mass attached to spring is Simple harmonic motion?

Simple harmonic motion is a type of periodic motion where the restoring force is directly proportional to the displacement from equilibrium and acts in the opposite direction. In the case of a mass attached to a spring, the motion is simple harmonic because the restoring force (provided by the spring) is directly proportional to the displacement from equilibrium (Hooke's Law) and acts in the opposite direction to the displacement, resulting in a sinusoidal motion.

What is the difference between scalar and vector?

scalor: a quantity having magnitude only, and no direction; exampless are mass,temperature,and time.

vector: a quantity that has both magnitude and direction ; examples are weight, velocity, and magnetic field strength.

Which is not a way to accelerate an object?

One way to not accelerate an object is by trying to reduce its speed.

In physics, a change in speed or in direction is called acceleration. One way not to accelerate an object is to change its name.

Use the archemedes principle to compare the densities of the cokewith water?

According to Archemedes' Principle, when a body (solid) ispartially or fully immersed in a liquid then the body loses a part of its weight. The weight lost by the body is equal to the volume of liquid displaced by the solid body.

In order to compare the density of water and coke, you have to immerse a solid object in water and note down the apparent decrease of weight of the object. Then we have to immerse the same object in coke and note down the apparent decrease in weight of the object. The ratio of these two readings is equal to the ratio of weights of equal volume of water and coke. Hence, it is equal to the ratio of densities of water and coke.

In outer space there is no friction and no opposing force to a spaceship movin at a certain speed then how come you cannot achieve a very high but definite velocity as even a small accelaration?

The simple answer to this is, you can achieve very high velocity. The limiting factor is the speed at which what ever fuel is used is ejected from the rear of the spaceship. The speed of the spaceship's forward motion could only equal that of the fuels ejection at the rear. At this points the forces would be equal and acceleration would stop.

Is heat a form of energy?

Yes, heat is a form of energy that is transferred from one object to another due to a difference in temperature. It can be transferred through conduction, convection, or radiation.

If you double the Kelvin temperature of a hot piece of steel how much more energy will it radiate per second?

According to the Stefan-Boltzmann law, the energy radiated per unit area per unit time (power) of a black body is proportional to the fourth power of its temperature in Kelvin. Therefore, if you double the Kelvin temperature of a hot piece of steel, it will radiate 16 times more energy per second (2^4 = 16).

What is Vector quantity?

Associates the direction taken with the speed

Any quantity that has direction and magnitude associated with it is considered a vector quantity. An example of a vector quantity would be velocity. It must be expressed with reference to a direction.-aerol_