NEET > Physics Class 11 > Collisions
Collisions Video Lecture - Physics Class 11 - NEET
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FAQs on Collisions Video Lecture - Physics Class 11 - NEET
| 1. What are collisions in the context of physics? |  |
Collisions in physics refer to the interactions between two or more objects where they exert forces on each other for a short period of time. These interactions can result in changes in the objects' velocities and directions.
| 2. What are the different types of collisions? | |
There are two main types of collisions: elastic and inelastic collisions. In an elastic collision, both momentum and kinetic energy are conserved, meaning that the total kinetic energy of the system remains the same before and after the collision. In an inelastic collision, only momentum is conserved, and the total kinetic energy of the system may change.
| 3. How can we calculate the momentum of an object involved in a collision? | |
The momentum of an object can be calculated by multiplying its mass by its velocity. Mathematically, momentum (p) is equal to mass (m) multiplied by velocity (v), so p = m * v. The unit of momentum is kilogram-meter per second (kg·m/s).
| 4. What happens to the total momentum of a system in a collision? | |
According to the law of conservation of momentum, the total momentum of a system remains constant before and after a collision, assuming no external forces are involved. This means that the sum of the momenta of all objects involved in the collision remains the same.
| 5. How does the concept of impulse relate to collisions? | |
Impulse is the change in momentum of an object, and it is closely related to collisions. During a collision, the impulse experienced by an object is equal to the change in its momentum. Impulse can be calculated by multiplying the force exerted on an object during a collision by the time over which the force acts.
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