Question

Find the momentum of a body of mass 100 g having a kinetic energy of 20 J​

Answer 1

Answer:

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Answer 2

step by step evening:

formula uesd

momentum =mass × velocity

kinetic energy

$= \frac{1}{2} mv {}^{2}$

given : kinetic energy= 20 J

and mass = 100 g = 0.1 kg

kinetic energy

$20 = \frac{1}{2} \times \frac{1}{10} \times v {}^{2}$

[ m = 0.1 kg and kinetic energy= 20 J ]

then

$v {}^{2} = 400$

$v = 20m \: per \: second$

Momentum = mass × velocity

$= \frac{1}{10} \times 20$

$2kg \: per \: second$

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