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3 years ago

Which of newton’s three laws does F=MA describe

Physics

1 answer:

kupik [55]3 years ago

4 0

Answer:

Newton's second law

Newton's second law, which states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration a of its centre of mass, F = ma, is the basic equation of motion in classical mechanics.

Explanation:

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A soccer ball is kicked horizontally off a bridge with a heigh of 36m. The ball travels 25m horizontally before it hits the pave

kow [346]

Answer:

The initial velocity was U=22.14m/s

Explanation:

Step one :

Applying the third equation of motion

v² = u²+ 2as

Where v= Final velocity

U =initial velocity

a= acceleration due to gravity

S= distance or displacement

Step two :

V= 0

a= 9.81m/s²

S=25m

U=?

Step three :

Substituting into the equation we have

0²=U²+2*9.81*25

0=U²+490.5

U²=-490.5

U=√490.5

U=22.14m/s

5 0

4 years ago

What is the length x of the side of the triangle below? (Hint: Use the cosine function.)

Dimas [21]

<u>Answer</u>

The correct answer is A.

<u>Explanation</u>

The given triangle is a right triangle.

The length of the hypotenuse is $2.5$ units.

The given angle is $39\degree$ .

The unknown side $x$ is adjacent to the given angle.

We can therefore use the cosine function to find $x$ .

Recall the mnemonics CAH.

This means that;

$\cos\theta=\frac{Adjacent}{Hypotenuse}$

This implies that,

$\cos39\degree=\frac{x}{2.5}$

We multiply both sides by $2.5$ to get,

$2.5\cos39\degree=x$

$x=2.5(0.7771)$

We evaluate to get

$x=1.94$

Therefore the length $x$ of the side of the triangle is $1.9$ units to the nearest tenth.

7 0

3 years ago

if you and your friend, ride bumper cars at the fair, what happens in terms of Newtons third law, when they collide?

belka [17]

Newton's third law says that for every action, there is an equal and opposite reaction. So if your friend's bumper car, both of you will go flying back at the same force in opposite directions.
Hope this helps.

3 0

3 years ago

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Which radio wave technologies would be unaffected by satellites that are not working properly?

Mila [183]

Answer:

MRI and Radio telescopes

3 0

3 years ago

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When temperature decreases but actual water vapor content remains the same, what happens to relative humidity?

ruslelena [56]

Answer:

d. Relative humidity increases.

Explanation:

The expression of relative humidity in terms of absolute humidity, absolute pressure and saturation pression at measured temperature is:

$\phi = \frac{\omega \cdot P}{(0.622+\omega)\cdot P_{sat}}$

When temperature decreases, the saturation pressure decreases also and, consequently, relative humidity increases. Therefore, the right answer is option D.

8 0

3 years ago

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