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2 years ago

Date Page 2. A bicycle of 15kg is moving with the velocity of 10m/s. calculate the kinetic energy.

Physics

1 answer:

QveST [7]2 years ago

3 0

Answer:

$\boxed {\boxed {\sf 750 \ J}}$

Explanation:

Kinetic energy is the energy an object possesses due to motion. It is calculated using the following formula.

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

In this formula, <em>m</em> is the mass and <em>v </em> is the velocity.

The bicycle has a mass of 15 kilograms and a velocity of 10 meters per second.

m= 15 kg
v= 10 m/s

Substitute the values into the formula.

$E_k= \frac {1}{2} (15 \ kg)(10 \ m/s)^2$

Solve the exponent.

(10 m/s)²= 10 m/s * 10 m/s = 100 m²/s²

$E_k= \frac{1}{2} (15 \ kg)( 100 \ m^2/s^2)$

Multiply all the values together.

$E_k= \frac{1}{2} ( 1500 \ kg*m^2/s^2)$

$E_k= 750 \ kg*m^2/s^2$

1 kilogram meter squared per second squared is equal to 1 Joule. Therefore, our answer of 750 kg*m²/s² is equal to 750 J.

$E_k= { 750 \ J$

The kinetic energy of the bicycle is <u>750 Joules.</u>

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Answer:

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Explanation:

Given that,

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When two mechanical waves that have positive displacements from the equilibrium position meet and coincide, a constructive interference occurs.

Option A

<h3><u>Explanation:</u></h3>

Considering the principle of superposition of waves; the resultant amplitude of an output wave due to interference of two or more waves at any point is given by individual addition of their amplitudes at that point. Two waves with positive displacements refer to the fact that crest of the both the waves are on the same side of displacement axis, either both are positive or both are negative, similarly with their troughs.

If such two waves with their crest on crest meet at any point, by superposition principle. their individual amplitude gets added up and hence the resultant wave after interference is greater in amplitude that both the individual waves. This is termed as a constructive interference. Destructive interference on the other hand is a condition when one of the two waves has a positive displacement and other has a negative displacement (a condition of one’s crest on other’s trough); resulting in amplitude subtraction.

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Answer:

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$mgh-Fh= 0.5mv^{2}= KE$

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3 years ago

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Given

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Conclusion

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6 months ago

Date Page 2. A bicycle of 15kg is moving with the velocity of 10m/s. calculate the kinetic energy. ​

Date Page 2. A bicycle of 15kg is moving with the velocity of 10m/s. calculate the kinetic energy.