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3 years ago

According to legend, Galileo dropped two balls from the Tower of Pisa to see which would fall

Physics

1 answer:

Zanzabum3 years ago

7 0

Answer: 4.9 N

Explanation:

Weight $W$ is the force that gravity exerts on matter and changes depending on where the body is located. This means, the weight of an object on Earth will not be the same as the weight of the same object on the Moon or on Mars.

Well, in the case of Galileo, he performed his experiment on Earth. Hence, the acceleration due gravity is $g=9.8 m/s^{2}$ .

In addition, weight is mathematically expressed as:

$W=m.g$

Where $m=5 kg$ is the mass of the ball

Solving the equation:

$W=(5 kg)(9.8 m/s^{2})$

$W=4.9 N$ This is the weight of the ball

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A physics student stands on the rim of the canyon and drops a rock. The student measures the time for it to reach the bottom to

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Answer:

50.2 m

Explanation:

We can solve the problem by using the following SUVAT equation for the vertical position of the rock:

$y(t)=h+ut+\frac{1}{2}gt^2$

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u = 0 is the initial velocity of the rock

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3 years ago

explain how metamorphic rocks are formed, and explain the differences between regional and contact metamorphism?

Igoryamba

Metamorphic rocks form when pre-existing or parent rocks (whether igneous, sedimentary, or even metamorphic) are altered by heat, pressure, and the chemical activity of fluids. When the dominant altering factor is heat, usually from direct contact , it may undergo fundamental change in texture and recrystallization is called contact metamorphism. While regional metamorphism, where rocks texture and minerals are changed by heat and pressure.

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3 years ago

an air craft is travelling due north with velocity of 100m/s astrong wind blow from the west with in velocity of 25m/s the reshs

OleMash [197]

Explanation:

The aircraft is traveling north at 100 m/s.

The wind blows from the west (towards the east) at 25 m/s.

The two vectors form a right triangle. The magnitude of the resultant velocity can be found with Pythagorean theorem:

v² = vx² + vy²

v² = (25 m/s)² + (100 m/s)²

v = 103 m/s

The direction can be found with trigonometry:

θ = atan(vy / vx)

θ = atan(100 / 25)

θ = 76.0°

The resultant velocity is 103 m/s at 76.0° north of east.

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3 years ago