3 years ago

4p

Physics

1 answer:

MariettaO [177]3 years ago

7 0

Answer:

You can get w =Fxd 20Nx5m w=100N energy= w÷t 100N÷4s E=25J 3 you can apply 3J in one second

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760.5J

Explanation:

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1/2*9*13^2

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A train travels 77 kilometers in 1 hour, and the 66 kilometers in 1 hour. What is the average speed?

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The kinetic energy of a moving object is E=12mv2. A 61 kg runner is moving at 10kmh. However, her speedometer is only accurate t

jek_recluse [69]

Answer:

$e=3367.2J$

% $e=1.43$ %

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From the exercise we know two information. The real speed and the experimental measured by the speedometer

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Knowing that we can calculate Kinetic energy for the real and experimental speed

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Now, the potential error in her calculated kinetic energy is:

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3 years ago