Question
A collision experiment is done on a horizontal table kept in an elevator. Do you expect a change in the results if the elevator is accelerated up or down because of the noninertial character of the frame?

Answer

Velocity and mass are only two components that affect collision between two bodies so in this change in acceleration due to gravity will not affect the collision between two bodies. (if kept horizontally)

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Read the passage given below and answer the following questions from 1 to 5. The impact and deformation during collision may generate heat and sound. Part of the initial kinetic energy is transformed into other forms of energy. A useful way to visualize the deformation during collision is in terms of a ‘compressed spring’. If the ‘spring’ connecting the two masses regains its original shape without loss in energy, then the initial kinetic energy is equal to the final kinetic energy but the kinetic energy during the collision time Δt is not constant. Such a collision is called an elastic collision. On the other hand the deformation may not be relieved and the two bodies could move together after the collision. A collision in which the two particles move together after the collision is called a completely inelastic collision. The intermediate case where the deformation is partly relieved and some of the initial kinetic energy is lost is more common and is appropriately called an inelastic collision. If the initial velocities and final velocities of both the bodies are along the same straight line, then it is called a one-dimensional collision, or head-on collision. When two equal masses undergo a glancing elastic collision with one of them at rest, after the collision, they will move at right angles to each other.
  1. After collision when two particles moves together then collision is:
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  2. Completely inelastic collision
  3. Both a and b
  4. None of these
  1. In elastic collision, loss in kinetic energy is:
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  2. Positive
  3. Negative
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  1. What is head on collision?
  1. What is elastic collision?
  1. What is inelastic collision?
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  1. Keplers second law is knows as:
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  1. Keplers third law is knows as:
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  1. The velocity of a planet is constant throughout its elliptical trajectory in an orbit.
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  2. False
  3. None of these
  1. State Kepler’s second law of planetary motion.
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  3. $(300\pm7)\Omega$
  4. $(300\pm1)\Omega$
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  3. 2.5
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  1. Find the equivalent resistance of the parallel combination having error of $1.8\Omega.$
  1. $(66\pm1)\Omega$
  2. $(66.7\pm1.18)\Omega$
  3. $(66.3\pm2)\Omega$
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