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3 years ago

Which of the following objects has the greatest kinetic energy?

Physics

2 answers:

algol [13]3 years ago

8 0

Answer:

A baseball flying through the air at 90 miles per hour.

Explanation:

Kinetic energy is a type of energy that an object has because of its motion. In this example, a baseball that is flying through the air would have kinetic energy because of this movement. In order to move this object, a force needs to be applied to it. In order for us to know the kinetic energy of an object, we have to look at both the mass and the speed. In this case, this ball would have the greatest kinetic energy because it has the greatest speed.

Verizon [17]3 years ago

4 0

Answer:

a baseball flying through the air at 90 miles per hour

Explanation:

For the question, Therefore, the kinetic energy of an object is proportional to the square of its velocity (speed). In other words, If the velocity is doubled the kinetic energy will increase by a factor of four.

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Verdich [7]

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Explanation:

This problem can be solve by the following equation:

$V=\frac{d}{t}$ (1)

Where:

$V=1.3 \frac{cm}{year} \frac{1 km}{100000 cm}=0.000013 \frac{km}{year}$ is the spreading rate of the seafloor, its velocity

$d=2400 km$ is the distance the Africa's west coast moved at this rate

$t$ is the time it took to the coast to move the descibed distance

Isolating $t$ from (1):

$t=\frac{d}{V}$ (2)

$t=\frac{2400 km}{0.000013 \frac{km}{year}}$ (3)

Finally:

$t=184,615,384.6 years$ This is the time it took to the Africa's west coastto move away from the Mid atlantic ridge.

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nirvana33 [79]

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A 2 L balloon filled with gas is warmed from 280 K to 700 K. What is the volume of the gas after it is heated?

irakobra [83]

Answer:

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Explanation:

<u>Given the following data;</u>

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Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Charles is given by;

$VT = K$