A spring ball of mass 0.5 kg is dropped from some height. On falling freely for 10 s, it explodes into two fragments of mass ratio 1:2.

A spring ball of mass 0.5 kg is dropped from some height. On falling freely for 10 s, it explodes into two fragments of mass ratio 1:2.
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A spring ball of mass 0.5 kg is dropped from some height. On falling freely for 10 s, ... m/s. Calculate the kinetic energy supplied during explosion.
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Description : A 2 kg block is dropped from a height of 4 metre onto a spring of force constant k = 1960 N/m. The spring will be compressed through a.1 cm b.4.5 cm c.3 cm d.8 cm e.107 dynes

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A piece of paper and a cricket ball are dropped from the same height. Under which of the following conditions do both reach the surface simultaneously? (1) They must have the same volume (2) They must have the same density (3) They must have the same mass (4) They must be dropped in vacuum

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Last Answer : They must be dropped in vacuum

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A rubber ball is dropped from a height of 2 metres. To what height will it rise if there is no loss of energy/velocity after rebounding ? (1) 4 metres (2) 3 metres (3) 2 metres (4) 1 metre

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Last Answer : 0.354 m s-1

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Last Answer : (B) 34.4

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