# What is the kinetic energy of the ball just before it hits the ground?

## What is the kinetic energy of the ball just before it hits the ground?

Answer: Explanation: Kinetic energy, while potential energy, PE= mgh where m is the mass, v is the velocity of the ball, g is acceleration due to gravity and h is the height.

## How do you find the total energy of a pendulum?

Energy in a Pendulum GPE can be calculated by multiplying the mass, the acceleration due to gravity, and the height change. Once the mass is let go, it starts to swing. Kinetic energy (KE) is the energy of motion, and is the product of one-half the mass, and the square of the velocity (v) in m/s.

What are the 4 kinds of conflict?

The opposing force created, the conflict within the story generally comes in four basic types: Conflict with the self, Conflict with others, Conflict with the environment and Conflict with the supernatural.

### What are the 5 types of conflicts?

Five of the seven types of conflicts are of the external kind.

• Person vs. Person. Also called man vs.
• Person vs. Nature.
• Person vs. Society.
• Person vs. Technology.
• Person vs. Supernatural.
• Person vs. Self.
• Person vs. Destiny (Fate/Luck/God)

### Is water an external force?

Introduction. Learn about structures and the natural forces that can affect them. The external forces such as wind, water and the vibration of the earth when an earthquake happens create internal forces within a structure.

What keeps the object remain at rest?

Inertia is a force which keeps stationary objects at rest and moving objects in motion at constant velocity. Inertia is a force which brings all objects to a rest position. All objects have inertia. A more massive object has more inertia than a less massive object.

## How do you solve for external force?

In equation form, the net external force is Fnet=4T−f….

1. Acceleration, a, is defined as a change in velocity, meaning a change in its magnitude or direction, or both.
2. An external force is one acting on a system from outside the system, as opposed to internal forces, which act between components within the system.

## What are the 5 forces that act on a structure?

The five types of loads that can act on a structure are tension, compression, shear, bending and torsion.

Where does the energy of the ball go each time it hits the ground answer in detail?

The answer lies in how far the ball has dented inward due to its collision with the floor. As it falls, the ball converts energy stored in the force of gravity—gravitational potential energy—into energy of motion—kinetic energy. By the time it reaches the floor, the ball is traveling quickly and it hits the floor hard.

### What do you conclude from this graph about the total energy of the ball as it moved up and down in free fall?

According to the graph, the total energy of the ball remained constant as it moved up and down in free fall. According to the data in our data table, however, the total energydoes not remain constant, suggesting a small amount of air resistance that was insignificant enough to be hidden in the graph.

### When work is done on a body by an external force?

An external force can change the kinetic energy or potential energy of an object without doing work on the object- that is, without transferring energy to the object. Instead,the force is responsible for transfers of energy from one type to another inside the object.

What counts as an external force?

For our purposes, we will simply say that external forces include the applied force, normal force, tension force, friction force, and air resistance force. And for our purposes, the internal forces include the gravity forces, magnetic force, electrical force, and spring force.

## How does the way energy is stored change when someone throws a ball upwards?

However, as the ball moves upward, it slows down as its initial kinetic energy is transformed into potential energy. When a ball is thrown straight up into the air, all its initial kinetic energy is converted into gravitational potential energy when it reaches its maximum height.

## What is total energy formula?

Total energy is the sum of all different types of energies a body can have. A body usually has 2 types, kinetic energy and potential energy. Total energy= K.E+P.E. For a spring mass system, if the spring has mass, total energy is K. E+PE+½kx² where k is the spring constant.

Is gravity an external force?

All the rest of the universe becomes external. With this in mind, we can see that gravity and normal forces are external, while the frictional forces between pucks are internal. Since all the external forces cancel out with each other, there are no net external forces.

### What is the difference between internal and external force?

Internal forces are the forces that emanate from within a system. The system must be defined by you/problem. External forces are the forces that emanate from outside the system. Action or reaction force has no difference.

### What factors affect potential energy?

Gravitational Potential Energy is determined by three factors: mass, gravity, and height. All three factors are directly proportional to energy.

Can an internal force accelerate a body?

Notice, though, that no matter how hard you push, the forces your hands exert on one another will not accelerate your body as a whole. internal forces never influence the motion of an object. Forces between distinct, separate objects are called external forces, and external forces DO influence the motion of objects.

## What is an example of an external force?

Examples of external forces include dead loads, such as the weight of the structure itself and the non-structural materials it supports, and live loads, which include moving loads, such as occupants, goods, and furniture, as well as wind loads, seismic loads, and impact loads, among others.

## Does total energy remain constant?

The total amount of energy and matter in the Universe remains constant, merely changing from one form to another. The First Law of Thermodynamics (Conservation) states that energy is always conserved, it cannot be created or destroyed. In essence, energy can be converted from one form into another.

Is Wind an internal or external force?

Forces can be classified as external (wind, gravity) or internal. The magnitude of forces, their direction, and their point and plane of application influence how they affect structures. Shear, tension, compression, and torsion are types of internal forces that can affect structures.

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