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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 20 km per hour in miles per hour?

20 km per hour is approximately equal to 12.4 miles per hour.

Does kinetic energy actually increase the speed of an object?

Gaining kinetic energy 'E' amounts to saying that the momentum of an object increases.

E = p^2 / 2m

where p is momentum and m is mass. (Momentum is just mass times speed.)

So, to increase the speed the kinetic energy has to change. In other words, if you set the kinetic energy to any value you like and keep it constant, there won't be a speed up.

What is the change in kinetic energy? You can just as well ask what is the change in momentum. Physicists have chosen the latter question and call the change in momentum 'the force'.

F = dp / dt

where F is force and d/dt means derivation with respect to time.

It is the pushing force acting on objects that makes them gain speed. Kinetic energy is usually something that you calculate at the end when you have found out what the forces in your problem are and what the momentum is as a function of time.

How fast is 5 km per second?

5 km per second = 18,000 km/h or 11,184.7 miles per hour.

How many mph is 100kmh?

100 kilometers per hour equates to 62.14 MPH

What causes an electron to reach zero velocity?

An electron can reach zero velocity by experiencing a slowing force, such as friction, that opposes its motion. Alternatively, if an equal and opposite force acts on the electron to stop its movement, it can also reach zero velocity.

What is base speed?

Base speed typically refers to the starting speed of a character or object in a video game or tabletop role-playing game. It is often used as a reference point for calculating movement distances or determining turn order. Base speed can vary depending on the specific game rules or character statistics.

What happens to the energy of a particle if the mass is constant and the speed increases?

The kinetic energy of the particle increases as the speed increases, following the equation ( KE = \frac{1}{2} mv^2 ) where ( KE ) is the kinetic energy, ( m ) is the mass of the particle, and ( v ) is the speed of the particle. The energy of the particle is converted to kinetic energy as its speed increases.

What includes the kinetic and potential energy of particles in a material?

The internal energy of a material includes both the kinetic and potential energy of particles. Kinetic energy is associated with the motion of particles, while potential energy is associated with the interactions between particles, such as chemical bonds or intermolecular forces.

What is the potential energy of a mass of 500 g raised to a height of 2 m?

The formula for working out Potential enery is:

PE = mgh - where g equals to the acceleration due to gravity (which is 10 newtons)

- mass should be in Kg's

- and height in meters

- final answer should be in Joules (J)

Therefore substitute it in :-)

Pe = (500g = 0.5kg) x (10N or more exact 9.8N) x (2 meters)

Pe = 10 Joules of potential energy with a object weighing 500g (or 0.5 kg) and from a height of 2 meters

How do you calculate the velocity of a moving object?

To calculate the velocity of a moving object, you divide the change in its position by the time it took for that change to occur. The formula for velocity is velocity equals displacement divided by time taken (v = d/t). The resulting value will have units of distance traveled per unit of time (e.g. meters per second).

Is 45 kmh more then 40 mph?

Yes, 45 km/h is greater than 40 mph. To compare the two units, you should convert them to a common unit of measurement (such as km/h) for an accurate comparison.

Can a position time graph be created from a velocity time graph?

Distance travelled from a velocity / time graph can be calculated from area under graph, say area under (v/t) graph from 0 - 1 seconds = distance travelled after 1 second, then do 0 - 2 seconds, 0 - 3 etc for set of data for distance / time graph

What is the kinetic energy of an object weighing 65 kg dropped from a height of 40m?

Kinetic energy is dependent on which point you are talking about. When it is about to be dropped, kinetic energy is zero. When it reaches almost hits the ground, there is maximum kinetic energy.

What is the change of energy called as it moves between kinetic energy and potential energy and back again?

The change of energy as it moves between kinetic and potential energy is called mechanical energy. This occurs in systems where the total mechanical energy (kinetic + potential) remains constant, such as in the case of an object in free fall or a swinging pendulum.

What does an upward sloping diagonal line mean in a velocity vs time graph?

An upward sloping diagonal line on a velocity vs. time graph represents constant acceleration. The steeper the slope, the greater the acceleration.

What does an downward sloping diagonal line mean in position vs time graph?

An downward sloping diagonal line on a position vs. time graph indicates constant negative acceleration or deceleration. This means that the object is moving in the negative direction and slowing down over time.

What does an upward sloping diagonal line mean in position vs time graph?

It means that either the distance is measured from the starting-line and the object

is moving forward, or else the distance is measured from the finish-line and the object

is moving backwards, because the distance is growing as time goes on.

If the upward sloping diagonal line is straight, it means the speed is constant. (not velocity)

A 2 kg object is dropped from a height of 12 m Using the conservation of energy calculate the speed it has at the end of the 12 m fall?

Use the formula KE = (1/2)mv2 (kinetic energy equals 1/2 times mass times the square of the velocity).

Use the formula KE = (1/2)mv2 (kinetic energy equals 1/2 times mass times the square of the velocity).

Use the formula KE = (1/2)mv2 (kinetic energy equals 1/2 times mass times the square of the velocity).

Use the formula KE = (1/2)mv2 (kinetic energy equals 1/2 times mass times the square of the velocity).

What is the formula of a speed to mass to energy?

The formula that relates speed to mass to energy is E=mc^2, where E represents energy, m represents mass, and c is the speed of light in a vacuum. This formula, proposed by Albert Einstein, explains the equivalence of mass and energy.

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).