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charle [14.2K]
3 years ago
7

Sarah moves her box in 3 minutes and does 14 J of work. John moves his box in the same amount of time using 12 J of work. Who is

more powerful?
Physics
2 answers:
Mekhanik [1.2K]3 years ago
4 0
(Energy) divided by (time) = (power). / / / / / / (More energy) divided by (same time) = (more power).
Vikentia [17]3 years ago
4 0

Just took the test, the answer was "Sarah, since she moved her box in the same amount of time but did more work."

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<h3><u>Answer;</u></h3>

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Centripetal force = = 1.234 × 10^-4 Newtons

<h3><u>Explanation;</u></h3>

Centripetal acceleration is given by the formula v²/r, where r is the radius of the circular path and v is the velocity of a body;

Centripetal acc = 3.2²/11

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Centripetal force is a force that acts on an object or a body in circular path and is directed towards the center of the circular path.

Centripetal force is given by the formula;

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mass = 33 mg or 1.33 × 10^-6 kg, velocity = 3.20 m/s and r = 11 m

Therefore;

Centripetal force = (1.33 ×10^-6 × 3.1²)/ 11

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8 0
3 years ago
Read 2 more answers
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Hey mate

Explanation:

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