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Kinematics

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

500 Questions

What power was used if it took 2s?

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Asked by Wiki User

If work or energy was exerted or transferred in 2 seconds,

then the power was

(1/2) x (the number of joules of work or energy) watts.

Give me some example of kinetic energy?

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You walking have kinetic energy

A car/train/ship/aeroplane moving has kinetic energy

A rocket going into space has kinetic energy.

The Earth orbiting around the Sun has kinetic energy.

Any object that is moving has kinetic energy.

K.E. = 0.5 massvelocity^2

or

KE = = 0.5 m v^2

How can kinetic energy turn into potential energy?

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The conversion of kinetic energy into potential energy (and vice versa) is a fundamental concept in physics and is often associated with the principles of mechanical energy conservation. The relationship between kinetic and potential energy is governed by the law of conservation of energy.

Gravitational Potential Energy:

Gravitational Potential Energy:ENTER FOR $1000 🤑 CASH FOR SUMMER 🌞MER 🌞

One common example involves the conversion of kinetic energy to gravitational potential energy and vice versa. Consider an object in free fall near the Earth's surface. As the object falls, it loses kinetic energy and gains gravitational potential energy. Conversely, if the object is lifted against gravity, it gains potential energy and loses kinetic energy.

Spring Potential Energy:

Another example involves the conversion of kinetic energy to elastic potential energy and vice versa. When a spring is compressed or stretched, it stores potential energy in the form of elastic potential energy. As the spring is released, this potential energy is converted into kinetic energy.

The mathematical expressions for these relationships are as follows:

Gravitational Potential Energy (U) and Kinetic Energy (K):

For an object of mass (m) at height (h) above the ground:

=

U=mgh

=

1

2

2

K=

2

1

mv

2

where

g is the acceleration due to gravity, and

v is the velocity of the object.

The total mechanical energy (E) is the sum of kinetic and potential energy and remains constant in the absence of external forces (ignoring air resistance and other non-conservative forces):

=

E=U+K

Elastic Potential Energy (PE) and Kinetic Energy (K):

For an object attached to a spring with a spring constant (k) and displacement (x) from equilibrium:

=

1

2

2

PE=

2

1

kx

2

=

1

2

2

K=

2

1

mv

2

Again, the total mechanical energy is conserved in the absence of non-conservative forces.

In summary, the conversion between kinetic and potential energy depends on the specific forces at play (gravity, spring forces, etc.) and is governed by the law of conservation of energy. The total mechanical energy of a system remains constant in the absence of non-conservative forces.

Why is the kinetic energy of each passenger different?

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because they keep on bouncing about

What make a basketball bounce higher helium or air?

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Helium will make a basketball bounce higher because when it is put into the basketball the air particles move faster and faster causing the basketball to bounce higher.

When your car is traveling at 55 mph how fast is your body traveling?

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A car going 55 mph is traveling at about 80.667 feet per second.

Describe potential energy?

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Potential energy is a fundamental concept in physics and plays a crucial role in understanding the behavior of physical systems and the conservation of energy. When the conditions or positions of objects change, potential energy can be converted into other forms of energy, such as kinetic energy or thermal energy, as objects move or undergo changes in their state.

How fast is 20cc in mph?

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How fast is 20cc on a go kart engine

Will it take a person traveling 40 mph to visit a place this 60 miles away?

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Yes, it will take the person 1.5 hours to travel to a place that is 60 miles away at a speed of 40 mph. This is calculated by dividing the distance (60 miles) by the speed (40 mph), which gives the time it takes to cover that distance.

Does a speeding car or a jet on a runway have more inertia?

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A speeding car and a jet on a runway would have roughly the same amount of inertia, as both objects have mass and are in motion. Inertia is a property of an object that resists changes in its motion, and is directly proportional to the object's mass. Therefore, the greater the mass, the greater the inertia.

What potential energy does a squashed ball have?

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When a ball is squashed, it gains potential energy due to the compression of its material. This potential energy is stored in the form of elastic potential energy, as the ball has the potential to return to its original shape when released.

What is 126 miles per hour when expressed in seconds?

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To convert miles per hour to seconds, you need to know the distance covered in a specific time period. Miles per hour is a unit of speed, while seconds are a unit of time. Without additional information, it is not possible to directly convert 126 miles per hour into seconds.

What is the miles per hour for 527 ktas?

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527 knots true airspeed (ktas) is equivalent to approximately 607 miles per hour (mph).

How fast does a wr400 go at its top speed?

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The top speed of a WR400 can vary depending on certain factors such as rider weight, gear ratio, and terrain conditions. On average, a stock WR400 can reach a top speed of around 80-85 mph (128-137 km/h). However, modifications such as aftermarket exhaust and tuning can potentially increase its top speed.

How long would it take a man to run 500metres in 10metres per second?

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It would take the man 50 seconds to run 500 meters at a speed of 10 meters per second.

Jack can run at 75 meters in 10 seconds how fast is he moving?

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Jack is moving at a speed of 7.5 meters per second.

What happens to the object's potential energy when it is dropped?

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When an object is dropped, its potential energy decreases. This is because potential energy is a result of an object's position or height above the ground. As the object falls, it loses height, which leads to a decrease in potential energy. At the same time, the object gains kinetic energy, which is the energy of motion.

When potential energy change to kinetic energy this is called?

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When potential energy changes to kinetic energy, it is called "energy transformation" or "energy conversion."

Is 2.5 mph slow?

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Yes, 2.5 mph is considered to be a slow walking pace. Most people walk at a speed of around 3-4 mph, so 2.5 mph would be slightly slower than average.

When do turkeys travel 55 mph?

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Turkeys are not capable of traveling at speeds of 55 mph. The maximum running speed of a turkey is around 20-25 mph.

What is the rate in feet per second of a girl who jogs 315 feet in 45 seconds?

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The rate at which the girl is jogging is 7 feet per second. This is calculated by dividing the distance (315 feet) by the time it takes (45 seconds).

If at rest is there kinematics?

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No, kinematics specifically refers to the study of motion. If an object is at rest, there is no motion occurring, and therefore no kinematics.

What are the other four forms of energy besdies kinetic potential machanical and gravitational?

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The other four forms of energy are thermal, electrical, chemical, and nuclear. Thermal energy refers to the energy associated with heat, electrical energy is the energy of electric charges, chemical energy is stored in chemical bonds, and nuclear energy is released during nuclear reactions.

What does 62 mph mean?

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62 mph stands for 62 miles per hour, which is a unit of speed commonly used in the United States. It indicates that an object or vehicle is traveling at a rate of 62 miles in one hour.

Can a horse run 40 mph?

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Yes, horses are capable of running at speeds of up to 40 mph. However, the average speed of a galloping horse is typically around 25-30 mph. The exact speed achieved can also depend on the breed and individual conditioning of the horse.