Question:
In inelastic collision
In inelastic collision
Updated On: Jun 14, 2022
- momentum, kinetic energy and total energy are conserved
- momentum, kinetic energy and total energy are not conserved
- momentum, and kinetic energy are conserved but total energy is not conserved
- total energy and momentum are conserved but kinetic energy is not conserved
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The Correct Option is D
Solution and Explanation
In a collision, the effect of external forces such as gravity or friction are not taken into account as due to small duration of collision (At) average impulsive force responsible for collision is much larger than external force acting on the system and since this impulsive force is 'internal' therefore the total momentum of system always remains conserved. In a collision total energy is also conserved. In an inelastic collision kinetic energy appears in other forms. In some cases
$ (KE)_{f} < (KE)_{i} $
such as when initial KE is converted into internal energy of the product while in other cases
$ (KE)_{f} > (KE)_{i} $
such as when internal energy stored in the colliding particles is released.
$ (KE)_{f} < (KE)_{i} $
such as when initial KE is converted into internal energy of the product while in other cases
$ (KE)_{f} > (KE)_{i} $
such as when internal energy stored in the colliding particles is released.
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Concepts Used:
Work, Energy and Power
Work:
- Work is correlated to force and the displacement over which it acts. When an object is replaced parallel to the force's line of action, it is thought to be doing work. It is a force-driven action that includes movement in the force's direction.
- The work done by the force is described to be the product of the elements of the force in the direction of the displacement and the magnitude of this displacement.
Energy:
- A body's energy is its potential to do tasks. Anything that has the capability to work is said to have energy. The unit of energy is the same as the unit of work, i.e., the Joule.
- There are two types of mechanical energy such as; Kinetic and potential energy.
Read More: Work and Energy
Power:
- Power is the rate at which energy is transferred, conveyed, or converted or the rate of doing work. Technologically, it is the amount of work done per unit of time. The SI unit of power is Watt (W) which is joules per second (J/s). Sometimes the power of motor vehicles and other machines is demonstrated in terms of Horsepower (hp), which is roughly equal to 745.7 watts.
- Power is a scalar quantity, which gives us a quantity or amount of energy consumed per unit of time but with no manifestation of direction.