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3 years ago

PLS HELP How much power is used if an athlete lives a 100n Weight up 5m in 20 seconds

Physics

2 answers:

BlackZzzverrR [31]3 years ago

8 0

Answer:

25J

Explanation:

power = work done ÷ time taken.

and work done = force applied × distance covered.

according to the question, the athlete lifts the weight of 100N upto 5m therefore;

100N × 5m = 500N/m

then onwards,

the work done (500 N/m) should be divided by the time taken to calculate the power,

500 ÷ 20s = 25J

is your answer.

hope this helped. :)

ELEN [110]3 years ago

3 0

<h2>Answer:</h2>

We know that,

<u>Power = Work done/time taken</u>

P = fs/t

P = 100 × 5/20

<u>P = 25Watt</u>.

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A force of 5N produces an acceleration of 8m/s2 on mass m1, and an acceleration of 24m/s2 on a mass m2. What acceleration would

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The acceleration that the same force will provide if both masses are tied together is; 6.0 m/s².

<h3>How to find the Acceleration?</h3>

We are given;

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Acceleration of the second mass, a₂ = 24 m/s²

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F = ma

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m₁ = F/a₁

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Thus;

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A 10-foot ladder is leaning straight up against a wall when a person begins pulling the base of the ladder away from the wall at

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$y = 4.36$

Explanation:

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Also:

Let $x = distance\ from\ the\ base\ of\ the\ ladder$

Let $y = height\ of\ the\ base\ of\ the\ ladder$

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Substitute 9 for x and 10 for L in $L^2 = x^2 + y^2$

$10^2 = 9^2 + y^2$

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Make $y^2$ the subject

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<em>Hence, the true distance at that point is approximately 4.36ft</em>

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