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Picture from internet about kinetic and potential

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Energy | The Dr. Binocs Show | Educational Videos For Kids

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A collision occurs when two objects come in contact with each other. All collisions have the same momentum before and after a collision. Examples of collisions include car crashes, bouncing a ball, and playing pool. Collisions are made from two smaller sections called elastic and inelastic collisions.

Elastic Collisions

In the case of playing pool or bouncing a ball, an elastic collision occurs. An elastic collision generally occurs when an elastic or hard object experiences a collision that bounces off another elastic or hard object, where the kinetic energy and momentum are the same before and after the collision. In an experiment, a small amount of energy will still be lost because of the friction between the surface and the objects.

Inelastic Collisions

In the case of a car crash, an inelastic collision occurs. An inelastic collision generally occurs when a soft object experiences a collision that does not result in a bounce. Kinetic energy is lost during this type of collision because the energy is transformed into other forces. The momentum is the same before and after the collision.

Two Dimensional Collisions

In the case of a two dimensional collision, the rules in elastic and inelastic collision are still the same, but vectors are used to find the momentum before or after a collision.

Images for kids

a completely inelastic collision between equal masses

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When Objects Collide

Have you ever driven bumper cars or played a game of pool? These are examples of collisions, and if you pay attention, you'll notice that collisions happen all around you! When objects collide or bump into one another, the energy in those objects changes. Before we look at those changes, let's first talk about energy.

What is Energy?

Energy is what makes things happen! There are two types of energy that objects can have. The first type is called potential energy, or stored energy. This means that an object is not yet moving, but it can! There are different types of potential energy and objects that are higher up greater potential energy. For example, a skier standing at the top of a mountain has more potential energy than a skier standing at the bottom of the hill.

The second type of energy is called kinetic energy, or the energy of an object in motion. Objects that are currently moving have kinetic energy, and like potential energy, there are different forms of kinetic energy also. For example, the skier mentioned above who is now zooming down the side of the mountain has kinetic energy because he/she is in motion.

Transfer of Energy

When objects collide, energy in those objects changes. A collision causes the energy in one object to transfer to the other object, affecting how the second object moves. Think of the game of pool. You line up the cue ball and aim at a striped ball at the other end of the table. When the cue ball collides with the striped ball, the energy from the cue ball will transfer, and will set the striped ball in motion. There are two different ways that this energy transfer might affect the ball.

Change in Direction

One of the possible outcomes of a collision is that the objects will change direction. As the objects come into contact with one another, the energy from one object can transfer and set the other object into motion. For example, in a pool game when the cue ball finally connects with the striped ball, both balls will move. The striped ball will be set into motion and will move in one direction, while the cue ball will bounce off and roll in another direction.

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collision & energy change: lesson for kids | study.com

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Collision & Energy Change: Lesson for Kids | Study.com

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Have you ever driven bumper cars or played a game of pool? These are examples of collisions, and if you pay attention, you'll notice that collisions happen all around you! When objects collide or bump into one another, the energy in those objects changes. Before we look at those changes, let's first talk about energy.

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Physics for Kids: Momentum and Collisions

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Kids learn about momentum and collisions in the science of physics and the laws of motion including units and measurement. Calculate momentum using mass times velocity.

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Kids learn about kinetic energy in the science of physics. The energy of motion can be calculated using mass and velocity. Standard unit is the joule. How it is different from potential energy.

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Kids learn about potential energy in the science of physics. The energy of position and state can be calculated using mass, gravity, and height. Standard unit is the joule. How it is different from kinetic energy.

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Kids learn about the science behind Energy including its different forms such as chemical, electrical, heat, and gravitational. When is energy considered renewable or nonrenewable?

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From gallons to British thermal units (Btu), kilowatthours to megajoules, short tons to metric tons, this handy calculator converts from one energy unit to another.