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Anna007 [38]
4 years ago
13

A body of mass 2kg is thrown up with a speed of 25m/s. Find its maximum potential energy.

Physics
1 answer:
klio [65]4 years ago
7 0

so 1/2mv^2

and the mass is 2 kg and the velociy is 25 so 1/2(2)(25)^2

which is 625 joules which is your answer

this is because the law of energy conservation states that energy can't be taken out of the system so assuming there is no friction the PE is the same as the KE

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The given parameters:

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v = H₀x

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T = \frac{x}{V} \\\\T = \frac{x}{xH_0} \\\\T = \frac{1}{H_0} \\\\T = \frac{1}{70 \ km/s/Mpc} \\\\T = \frac{1 \ sec}{70 \times 3.24 \times 10^{-20} } \\\\T = 4.41 \times 10^{17} \ sec\\\\T = \frac{4.41 \times 10^{17} \ sec\  \times \ years}{3600 \ s \ \times\  24\ h\  \times \ 365.25 \ days} \\\\T = 1.397  \times 10^{10} \ years\\\\T = 13.97 \ billion \ years

Thus, the age of the galaxy when we look back is 13.97 billion years.

Learn more about Hubble's law here: brainly.com/question/19819028

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source: https://socratic.org/questions/how-can-a-chemical-change-be-speeded-up

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