## What causes the electric energy to be transformed into heat?

When electron flow is resisted, some of the energy in the electrons does not travel through all the way. Because energy is conserved, the energy that was moving the electrons forward is converted to heat energy.

**Why is Class 4 energy needed?**

To do any kind of work we have to apply force and to apply force we need energy. It shows that Work, Force and Energy are related and dependent on each other. We can say that work is done when we possess the energy to apply force.

**How do you introduce energy to your students?**

Introduce the students to the word energy. Demonstrate some examples by having a student run, turn on a light, make a sound, or ride a bike. These are examples of energy being displayed. Ask the students to give other examples, and make a class list.

### What activities use energy?

We divide our energy use among four economic sectors: residential, commercial, transportation, and industrial. Heating and cooling our homes, lighting office buildings, driving cars and moving freight, and manufacturing the products we rely on in our daily lives are all functions that require energy.

**How do you introduce energy?**

Energy is defined as the ability to do work. Energy can be found in many things and can take different forms. For example, kinetic energy is the energy of motion, and potential energy is energy due to an object’s position or structure. Energy is never lost, but it can be converted from one form to another.

**What are the similarities and differences between kinetic and potential energy?**

Kinetic energy is energy possessed by a body by virtue of its movement. Potential energy is the energy possessed by a body by virtue of its position or state. While kinetic energy of an object is relative to the state of other objects in its environment, potential energy is completely independent of its environment.

#### What do kinetic and potential energy have in common?

Potential energy is energy stored in an object due to its position or arrangement. Kinetic energy is energy of an object due to its movement – its motion. All types of energy can be transformed into other types of energy. This is true for potential and kinetic energy as well.

**What two factors influence potential energy?**

The factors that affect an object’s gravitational potential energy are its height relative to some reference point, its mass, and the strength of the gravitational field it is in.

**What do potential and kinetic energy have in common Brainpop?**

When an object at rest is put into motion. What does potential and kinetic energy have in common? They´re both related to motion. Energy is transferred to that object.

## What does the amount of kinetic energy an object has depends on?

The amount of translational kinetic energy (from here on, the phrase kinetic energy will refer to translational kinetic energy) that an object has depends upon two variables: the mass (m) of the object and the speed (v) of the object. The kinetic energy is dependent upon the square of the speed.

**What object has the most potential energy?**

Higher objects (with further to fall) have greater potential energy. The heaviest of 2 objects at the same height has the greatest gravitational potential energy.

**What object has the most kinetic energy?**

1. An airplane has a large amount of kinetic energy in flight due to its large mass and fast velocity. 2. A baseball thrown by a pitcher, although having a small mass, can have a large amount of kinetic energy due to its fast velocity.

### What object has the most inertia?

Since inertia depends only on the mass, the object with the most mass has the most inertia.

**Why does speed affect kinetic energy?**

It turns out that an object’s kinetic energy increases as the square of its speed. A car moving 40 mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph. Thus a modest increase in speed can cause a large increase in kinetic energy.

**What is the relationship between mass and kinetic energy?**

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

#### What is the relationship between mass and time?

Originally Answered: Is there relationship between mass and time? Sure. In an everyday sense, the more mass you consume in a shorter amount of time, the more massive you get over time, assuming energy output remains the same.

**What is the relationship between mass and speed?**

Short answer: positive correlation. Faster an object is relative to you, the more massive it appears to you. Objects have an intrinsic mass — sort of a minimum mass for that object — and a mass that comes from its relative velocity. The intrinsic mass is known also as the rest mass.