When an object explodes, it breaks up into more than one piece and it therefore changes its shape. Explosions occur when energy is transformed from one kind e.g. chemical potential energy to another e.g. heat energy or kinetic energy extremely quickly.
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What type of collision is an explosion?
An explosion is a special type of collision. It is a perfectly inelastic collision that seemingly happens in reverse. Before the ‘collision’, all objects are stuck together. After the ‘collision’, all objects are moving apart from one another.
What is collision and explosion in physics?
An object being fired from a cannon is also a collision where momentum must be conserved. As the momentum before the ‘collision’ is zero, the momentum after the collision is zero. In physics, this type of event is termed an explosion.
What is explosion give example?
An explosion is a sudden, violent burst of energy, for example one caused by a bomb. A second explosion came minutes later and we were enveloped in a dust cloud. Three people have been killed in a bomb explosion in northwest Spain. Synonyms: blast, crack, burst, bang More Synonyms of explosion.
What causes an explosion?
An explosion is a rapid expansion of gases. Many explosions occur when gases are exposed to a source of heat- such as fire, sparks, even static elec- tricity-or an increase in pressure. Explosions can also be caused by chemical reactions.
Why does kinetic energy increase in explosion?
The chemical energy of the shell is converted to mechanical energy. The external potential energy gets converted to its kinetic energy due to explosion. So kinetic energy increases.
Why is the momentum after an explosion zero?
When there is a bomb explosion, the momentum and kinetic energy are zero before the explosion. Thus the total momentum must remain zero, but the kinetic energy clearly increases after the explosion.
What is Ke formula?
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 are 3 types of collisions?
Motor vehicle crash involves three types of collisions: vehicle collision, human collision, and internal collision.
How do you find the velocity of an explosion?
What is called impulse?
1 : a force that starts a body into motion. 2 : the motion produced by a starting force. 3 : a strong sudden desire to do something She resisted the impulse to shout. 4 : nerve impulse.
Can kinetic energy increase after explosion?
Thus, we see that, although the momentum of the system is conserved in an explosion, the kinetic energy of the system most definitely is not; it increases. This interaction—one object becoming many, with an increase of kinetic energy of the system—is called an explosion.
What are the types of collisions in physics?
There are two types of collisions: Inelastic collisions: momentum is conserved, Elastic collisions: momentum is conserved and kinetic energy is conserved.
How do you classify collisions?
There are two types of collisions between two bodies – 1) Head-on collisions or one-dimensional collisions – where the velocity of each body just before impact is along the line of impact, and 2) Non-head-on collisions, oblique collisions or two-dimensional collisions – where the velocity of each body just before …
What are the 3 types of explosives?
- blasting and bulk explosives (explosives used for commercial blasting applications or for their manufacture);
- perforating explosives (intended for use in the oil and gas well industry);
- special-application explosives (high explosives used for other applications, including primary explosives).
What is explosion in short?
An explosion is a rapid expansion in volume associated with an extremely vigorous outward release of energy, usually with the generation of high temperatures and release of high-pressure gases. Supersonic explosions created by high explosives are known as detonations and travel through shock waves.
What is explosion Short answer?
An explosion is a rapid increase in volume and release of energy. in an extreme manner, usually with the generation of high temperature and the release of gases. examples-fireworks(crackers)
What are the main effects of explosions?
Explosion effects generally include those of overpressure, thermal effects, energized projectiles (fragments, debris, and missiles), ground shock, and cratering.
What are the types of explosives?
There are three fundamental types: mechanical, nuclear, and chemical. A mechanical explosive is one that depends on a physical reaction, such as overloading a container with compressed air.
What causes an explosion without fire?
Dust explosions can occur when any distributed combustible dust is present in high enough quantities in the atmosphere or another oxidizing gaseous media, such as pure oxygen. A fuel-air explosion occurs when fuel is the explosive ingredient in a blast resulting in dust clouds.
Can the momentum be negative?
Momentum can be negative. Momentum is a vector quantity, meaning it has both magnitude and direction. In physics, direction is indicated by the sign, positive or negative. Negative quantities move backwards or down, whereas positive quantities typically indicate the object is moving forward or up.
What has more momentum?
Massive objects have more momentum for a given speed, while lighter objects have less momentum. This is why it takes more effort (force) to stop a fully loaded truck than an empty one. Likewise, faster moving objects have more momentum than slower moving objects.
What is the difference between elastic and inelastic collisions?
A perfectly elastic collision is defined as one in which there is no loss of kinetic energy in the collision. An inelastic collision is one in which part of the kinetic energy is changed to some other form of energy in the collision.
Is momentum a scalar or a vector?
momentum, product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction.
How does the law of conservation of momentum apply to an explosion?
In the case of an explosion, before the explosion the momentum of the bomb is zero, so according to law of conservation of momentum, the momentum after explosion should also be zero. So, momentum of the bomb before collision = momentum of the bomb after collision.