Energy conservation can be defined as when we save energy.
Examples : when we have two bulbs lighting and we take off one.
Yes. Basically, energy is ALWAYS conserved. The popular saying, that in a nuclear reaction mass is converted to energy, is plainly wrong, since both mass and energy are conserved. Read about "mass deficit", for example in the Wikipedia, for more details.
whoever put up the answer for why is energy conserved is dotish and stupid
no it's not cuz if there is friction energy wont be conserved
Momentum is conserved in a collision. If two cars have the same mass and are traveling at the same speed and collide headfirst, the momentum of both cars cancel each other out and they will be motionless. If one has greater speed or mass than the other, it will still have the difference in momentum after the collision.
kinetic energy..........
whoever put up the answer for why is energy conserved is dotish and stupid
Yes. Basically, energy is ALWAYS conserved. The popular saying, that in a nuclear reaction mass is converted to energy, is plainly wrong, since both mass and energy are conserved. Read about "mass deficit", for example in the Wikipedia, for more details.
whoever put up the answer for why is energy conserved is dotish and stupid
No. Total energy is always conserved, but not so mechanical energy.
no it's not cuz if there is friction energy wont be conserved
no it's not cuz if there is friction energy wont be conserved
Momentum is conserved in a collision. If two cars have the same mass and are traveling at the same speed and collide headfirst, the momentum of both cars cancel each other out and they will be motionless. If one has greater speed or mass than the other, it will still have the difference in momentum after the collision.
Therefore energy is conserved.
Not really, no.
kinetic energy..........
Acceleration is not conserved. Energy can not be created nor destroyed. Mass and momentum are both conserved through a set time.
Energy is neither used up nor destroyed, but it is converted into something else. In that way, it is conserved.