Debanjana adhikari Asked a Question
May 24, 2020 10:45 ampts 30 pts
A ball of mass m , initially at rest, is dropped from a height of 5 meters. If the coefficient of restitution is 0.9, the speed of the ball just before it hits the floor the second time is approximately (take g =9.8 m/s* ) (a) 9.80 m/s (b)9.10 m/s (c)8.91 m/s (d)7.02 m/s
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  • Chandra dhawan
    dear see full concept of cofficiant of reatrication and solution of prob....
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    Chandra dhawan
    it's very helpful for you dear
  • Ruby negi thankyou
    8.91is the correct ans.. option c...
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    Ruby negi
    for any doubt, you must ask...
  • Dhairya sharma
    see attached.
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  • Abhishek singh
    I defined coefficient of restitution first. It's definately is the ration of two velocities as shown in diagram below. its value is equal to 1 for elastic collision. and for inelas...
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    Abhishek singh
    this theory along with stepwise explanation will help you build concept.