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A body of mass 5 kg s arts from the arigin with an initial velocity straight u with rightwards arrow on top equals 30 plus 40 jms to the power of negative 1 end exponent . If a constant Force F with not stretchy rightwards arrow on top equals negative left parenthesis i plus 5 j right parenthesis straight N acts on the body. the lime in which the y-component of the velocity becomes nero is

  1. 5 S
  2. 20 S
  3. 40 S
  4. 80 S

The correct answer is: 40 S

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