Which of the following is used to calculate an object’s kinetic energy?

HomeWhich of the following is used to calculate an object’s kinetic energy?
Which of the following is used to calculate an object’s kinetic energy?

The equation used to calculate the kinetic energy is KE = 2 mv2 .

Q. What are two ways you can increase the potential energy of a marble on a ramp?

As the marble rolls down the hill its potential energy is converted to kinetic energy (its height decreases, but its velocity increases). When the marble goes back up the loop its height increases again and its velocity decreases, changing kinetic energy into potential energy.

Q. What is the potential energy of a 150 kg diver standing?

Answer: The answer is 14,700.

Q. What is needed to calculate the kinetic energy of an object?

In classical mechanics, kinetic energy (KE) is equal to half of an object’s mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

Q. What happens to the kinetic energy of an object when the object is massless?

Answer: There will be no Kinetic Energy in an massless object. Mass is just part of the energy of a body which is not kinetic energy.

Q. Why does a marble roll down a ramp?

When an object is in free fall, gravity increases its velocity by 9.8 m/s with every passing second. So after one second the object would be falling at a velocity of 9.8 m/s. Gravity should have constantly accelerated the marble as it rolled down the ramp in this activity.

Q. What happens when you raised the height of the incline?

Answer. Answer: When an object rests on a surface like the ramp, the ramp exerts a force called ‘normal force’ on the object, and this force is greater when the angle of incline is smaller. If the ramp is steep, the force of gravity can more easily overcome the force of friction.

Q. How does the length of a ramp affect speed?

The force of gravity points straight down, but a ball rolling down a ramp doesn’t go straight down, it follows the ramp. This loss of gravitational potential energy shows up as an increase in kinetic energy. If the ball falls a farther distance vertically, it will have a greater kinetic energy and be going faster.

Q. What will happen if the slope of inclined plane is too steep?

Answer. Answer: The steeper the slope, or incline, the more nearly the required force approaches the actual weight. Expressed mathematically, the force F required to move a block D up an inclined plane without friction is equal to its weight W times the sine of the angle the inclined plane makes with the horizontal.

Q. Is it easier to push up a load on a steep slope?

Answer. nope. It is easier to push down a slope as the gravity helps us and takes some weight whereas while pushing it upwards we oppose gravity and the weight of the object.

Q. Which kind of inclined plane pushes up more steeper or flatter?

A flatter inclined plane has to apply more upward force to support something (or someone) because gravity, pulling toward the center of the Earth, pulls the object more into the table.

Q. How is inclined plane useful for us?

Inclined planes are widely used to move heavy loads over vertical obstacles; examples vary from a ramp used to load goods into a truck, to a person walking up a pedestrian ramp, to an automobile or railroad train climbing a grade. The screw consists of a narrow inclined plane wrapped around a cylinder.

Q. How are plane useful for us?

Airplanes and helicopters are transportation tools. They help us get places faster, and sometimes can mean life or death. Also, general aviation planes have helped families create many memories up in the skies and have sparked new hobbies. It has created more jobs and more people can fly with these things.

Q. Does an inclined plane change the direction of the force?

​Inclined planes and pulleys both lower the amount of force needed to raise a load or object. Inclined planes reduce the amount of force required by increasing the distance an object must travel. Simple pulleys change the direction of the force used to lift an object over a distance.

Q. What is the path of the ball on the inclined plane?

In that case, the ball rolls along a circular path of radius R on the balls surface. However, if the spin axis is tilted, then the ball will roll along a circular path of radius r < R on the ball’s surface, located near the bottom of the ball, while it rolls down a straight line path on the surface of the incline.

Q. What happens when a ball rolls down an inclined plane?

When the ball rolls down the rough inclined plane, the mgsinθ acts down the plane but a frictioncomes into existence which acts up the plane. That friction prodces angular acceleration on the ball and the net accelerating force on the ball becomes equal to (mgsinθ-friction). Therefore, it has a smaller acceleration.

Q. Which could be considered an inclined plane wrapped around a cylinder?

A screw is an inclined plane wrapped around a cylinder.

Q. Why use a ramp if it requires the same amount or more work as lifting the mass up to the same height?

Because energy is conserved, it takes the same amount of energy to lift a box as it does to push it up a ramp to the same position (ignoring any friction). In both cases the object gains the same amount of Gravitational Potential Energy.

Q. What is the relationship between work and a ramp?

Work = Forcex Distance Going up a ramp: Work = Force x Distance The work done is the same in either case!

Q. Is a device that does work with only one movement?

A device that does work with only one movement is a compound machine. The number of times a machine multiplies the input force is the output force of the machine.

Q. What is a device that does work with only one movement and changes the size or direction of a force?

simple machine. a device that does work with only one movement and changes the size of direction of a force is a. lever.

Q. When two or more simple machines work together they are called a n?

A compound machine is a combination of two or more simple machines.

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How to Calculate Kinetic Energy

In this video we will learn how to calculate the kinetic energy of a object using the formula KE = 1/2 mv^2.

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