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2 years ago

What is the acceleration of a full bottle of water dropped fron a desk

Physics

1 answer:

Elodia [21]2 years ago

8 0

The acceleration of the bottle is $g=9.8 m/s^2$ downward

Explanation:

When an object is in free fall (=only the force of gravity is acting on it), its acceleration is equal to the acceleration of gravity.

In fact, the only force acting on the object is the force of gravity, whose magnitude is:

$F=mg$

where

m is the mass of the object

$g=9.8 m/s^2$ is the acceleration of gravity

According to Newton's second law, the net force on the object is equal to the product between its mass (m) and its acceleration (a), so

$F=ma$

By combining the two equations, we get

$mg=ma\\a = g$

Therefore, the acceleration of any object in free fall (and so, also of the bottle in the problem) is $g=9.8 m/s^2$ .

Learn more about weight and forces:

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A 5 kilograms bowling ball is dropped out a window. It hits the ground, and bounces upward. The velocity change of the ball is n

ioda

Answer:

13.5

Explanation:

Mass: 5kg

Initial Velocity: -15

Final Velocity: 12

Force: 10

We can use the equation: Vf = Vi + at

We need to find acceleration, and we can use the equation, F=ma,

We have mass and the force so it would look like this, 10=5a, and 5 times 2 would equal 10, so acceleration would be 2.

Now we have all the variables to find time.

Back to Vf = Vi + at, plug the numbers in, 12 = -15 + 2(t)

Plugging them in into desmos gives 13.5 for time.

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2 years ago

The radius of a planet is 2400 km, and the acceleration due to gravity at its surface is 3.6 m/s2.

kiruha [24]

Answer:

$3.1\cdot10^{23}\:\mathrm{kg}$

Explanation:

We can use Newton's Universal Law of Gravitation to solve this problem:

$g_P=G\frac{m}{r^2}$ ., where $g_P$ is acceleration due to gravity at the planet's surface, $G$ is gravitational constant $6.67\cdot 10^{-11}$ , $m$ is the mass of the planet, and $r$ is the radius of the planet.

Since acceleration due to gravity is given as $m/s^2$ , our radius should be meters. Therefore, convert $2400$ kilometers to meters:

$2400\:\mathrm{km}=2,400,000\:\mathrm{m}$ .

Now plugging in our values, we get:

$3.6=6.67\cdot10^{-11}\frac{m}{(2,400,000)^2}$ ,

Solving for $m$ :

$m=\frac{2,400,000^2\cdot3.6}{6.67\cdot 10^{-11}},\\m=\fbox{$3.1\cdot10^{23}\:\mathrm{kg}$}$ .

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2 years ago

What are the 2 types of crystallization ?

irinina [24]

Answer:

evaporative crystallization

cooling crystallization from solution or the melt

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2 years ago

Read 2 more answers

In a nuclear reactor, each atom of uranium (of atomic mass 235 u) releases about 200 MeV when it fissions. What is the change in

Ket [755]

Answer:

0.002372187708 kg

Explanation:

Each atom of Uranium 235 releases 200 MeV = 200×10⁶×1.60218×10⁻¹⁹

= 200×1.60218×10⁻¹³ Joule

Number of atoms in a 2.6 kg sample mass = (2.6/0.235)×6.02214076×10²³

⇒Number of atoms in a 2.6 kg sample mass = 66.627×10²³ atoms

Change in energy = Change in mass / (speed of light)²

ΔE = Δmc²

⇒200×1.60218×10⁻¹³×66.627×10²³ = Δm×(3×10⁸)²

⇒Δm = 200×1.60218×10⁻¹³×66.627×10²³/(3×10⁸)²

⇒Δm = 2372.187708×10⁻⁶ kg

∴Change in mass = 0.002372187708 kg

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2 years ago

Assuming motion is on a straight path what would result in two positive components of a vector

polet [3.4K]

If the object being represented is going both up and to the right.

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3 years ago

What is the acceleration of a full bottle of water dropped fron a desk​

What is the acceleration of a full bottle of water dropped fron a desk