Question:

A body is projected vertically upwards from earth’s surface. If its kinetic energy of projection is equal to half of its minimum value required to escape from earth’s gravitational influence then the height upto which it rises is: (R = radius of earth)

Options :

  • (a) 2R
  • (b) 3R
  • (c) 4R
  • (d) R

Answer :

(d) R

Answer Steps :

step 1

step 2

step 3

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