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 which of the following systems will the radius of the first orbit (n=1) be minimum?
  2. An astronomical telescope arranged for normal adjustment has a magnification of 6.
  3. A tuning fork A produces 4 beats per second with another tuning fork B of frequency
  4. A body A experiences perfectly elastic collision with a stationary body B
  5. If alternating source of primary coil on transformer is replaced by a Laclanche cell