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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

What is 40kmh in mph?

40 km/h is approximately 24.85 mph.

What is 10 meters in 1.39 seconds as meters per second?

10 meters in 1.39 seconds equates to approximately 7.2 meters per second.

What is 49 kts in mph?

49 knots is approximately equal to 56.4 miles per hour (mph).

What is the kinetic energy of a person on top of a tower e equals with a potential energy of 15000 joules?

(assuming no air resistance)

potential energy translated to kinetic energy.

you need some numbers in:

potential energy = m*g*h = 15 000 j

say m = 100 kg

say g = 10 m/s^2 (approximation)

then h = 15 000 / (100*10) = 15 metres

so

100 kg after falling 15 metres will have kinetic energy = 15 000 joules

KE = 0.5 * m * v^2

so velocity) at base of tower :

v =square root (15 000 / (0.5 * 100))

v = 17.32 metres / second

so , potential energy lost = kinetic energy gained.

What is the kinetic energy of a particle weighing 175 lb and traveling at 60 mph?

Conversions needed.

175 lbs (1 kg/2.2 lbs) = 79.5 kg

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60 mph (1609 meters/1 mi)(1 hr/3600 s) = 26.8 meter per second

--------------------------------------------------------------------------------------------now

Kinetic energy = 1/2(mass kg)(velocity m/s)2

KE = 1/2(79.5 Kg)(26.8 m/s)2

= 2.9 X 104 Joules

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Is a flashlight battery auto potential or kinetic?

A flashlight battery contains stored chemical potential energy that is converted into electrical energy when the flashlight is turned on. This electrical energy is then used to produce light energy, which is a form of radiant energy.

When does an object have positive buoyancy?

An object has positive buoyancy when it weighs less than the fluid it displaces. This causes the object to float in the fluid, as the buoyant force pushing upward is greater than the force of gravity pulling downward. Objects with positive buoyancy will naturally rise to the surface of a fluid.

What is the average numeric kph?

The average numeric speed in kilometers per hour (kph) varies depending on the mode of transportation. For example, the average speed of a car on a highway is typically around 90-120 kph, while a bicycle may travel at an average speed of 15-25 kph. However, the specific average kph can vary widely based on factors such as traffic conditions and speed limits.

What are the five kinetic energies?

The five kinetic energies are translational energy (movement from one place to another), vibrational energy (vibrations within a molecule or crystal lattice), rotational energy (spinning or rotating motion), electrical energy (movement of electrons in a conductor), and sound energy (vibrational energy transmitted through a medium).

Is acceleration equal to the initial velocity minus the final velocity and then divided by time?

No, acceleration is calculated as the change in velocity divided by time. It is the rate at which the velocity of an object changes. Mathematically, acceleration is represented as (final velocity - initial velocity) / time.

Why does speed happen?

Speed is the rate at which an object covers distance. It happens when an object moves across a distance in a specified amount of time. Speed can be influenced by various factors such as the force applied, resistance, and the mass of the object.

How fast is 12km in mph?

12 km per hour is about 7.456 MPH.

What will increase the effective energy of the xray beam?

Increasing the kilovoltage (kV) or mAs (milliamperage per second) will increase the effective energy of the x-ray beam by producing higher-energy photons. This can result in better penetration through the body and improved image quality. Additionally, filtering out low-energy photons can also increase the effective energy of the x-ray beam.

Why would a bullet pierce a mirror without breaking it?

A bullet may pierce a mirror without breaking it if it hits the mirror at a very acute angle or if the mirror is made of toughened material that can absorb the impact without shattering. The angle of impact and the velocity of the bullet both play a role in determining whether the mirror breaks or not.

Is momentum a conserved quantity?

Yes, momentum is a conserved quantity in closed systems where no external forces act. This means that the total momentum before an interaction is equal to the total momentum after the interaction. This principle is known as the law of conservation of momentum.

Is kinetic energy easily lost?

Kinetic Energy - this is the energy which came from the different radiation . the best example is MAGNET there is a popular energy that can attract to other materials and different metalic objects

From: JayRica

When is acceleration equals half of the sum of initial and final velocities?

If you have a particle with constant acceleration, and you add the initial

and final velocities and then divide them by two, what you get is the average

velocity of the particle in that period of time.

How do you find kinetic friction without the coefficient?

You can find the kinetic friction force by measuring the normal force acting on the object and the net force experienced by the object when it is in motion. By applying Newton's second law (F = ma), where a is the acceleration of the object, you can calculate the kinetic friction force without knowing the coefficient.

What is the mass of an object with a potential energy of 980 J and a height of 5 meters?

To find the mass of the object, we first need to determine the gravitational potential energy formula, which is PE = mgh (mass x gravity x height). Given the potential energy (PE) as 980 J and height (h) as 5 meters, solve for mass (m) using the formula. The mass of the object would be 40 kg.

How fast are you running if you run 328 yards in 1.25 minutes?

To determine speed, you must convert minutes to hours. 1.25 minutes is equivalent to 0.02083 hours (1.25 minutes ÷ 60). Divide the distance (328 yards) by the time in hours (0.02083 hours) to find the speed. Thus, the speed is 15732 yards per hour.

When is the shape of an position versus time graph parabolic?

If a position versus time graph is parabolic, then:

  • Speed versus time is a straight line.
  • Acceleration (magnitude) vs time is a horizontal line, so the acceleration is constant.

The graph of height/time for a stone or a baseball

tossed upward is an inverted parabola.

How many feet per second is 20 mph?

20 mi/h * (1 h / 3600 s) * (5280 ft / 1 mi) = 29.33 ft/sec

How would you categorize the energy found in the food eat kinetic or potential?

Potential Energy is energy that could come from something that if it were to fall (say, from gravity) the kinetic energy gained from that fall would be equal to that. Other forms could be elastic potential energy, chemical potential energy, electrical potential energy (eventually becomes voltage), and etc.

Kinetic energy is of an object that is moving (because I assume we're talking of Newtonain motion).