A man throws balls with the same speed vertically upwards one after the other

A man throws balls with the same speed vertically upwards one after the other at an interval of 2 s.What should be the speed of the throw,so that more than two balls are in the sky at any time? (take,g=9.8ms⁻²)

Options

(a) Any speed less than 19.6 ms⁻¹
(b) only with speed 19.6ms⁻¹
(c) More than 19.6 ms⁻¹
(d) At least 9.8 ms⁻¹

Correct Answer:

More than 19.6 ms⁻¹

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. In Young’s experiment, the ratio of maximum to minimum intensities of the fringe
  2. If an electron and a proton have the same de-Broglie wavelength, then the kinetic
  3. A body of mass 2 kg is kept by pressing to a vertical wall by a force of 100 N
  4. According to Hook’s law of elasticity, if stress is increased, the ratio of stress
  5. A compass needle which is allowed to move in a horizontal plane