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2 years ago

What is the answer please help me!

Physics

1 answer:

Juliette [100K]2 years ago

6 0

Answer:

The greatest force of gravity on the ball will occur at the point when the ball is near to hit the ground

Explanation:

We know that the earth's center attracts everything towards its center with an acceleration of 9.8 m/s² so it simply means that the change in velocity must occur to produce acceleration. When the ball comes towards the earth, its speed continuously increases and it is at maximum level when it is about to hit the ground so this is the point where gravitational force is maximum.

I hope this helps ^_^

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Well-designed weight-training programs only target two or three body areas.<br> a. True<br> b. False

Sloan [31]

False<span>, well designed weight training programs actually target most of the muscles in the body. A good weight training program includes many compound exercises to activate multiple muscle groups and promote muscle hypertrophy. Some isolation exercises may also be included to target a specific muscle and help it grow.</span>

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2 years ago

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Select the correct answer. The tallest players on a volleyball team USUALLY play which position? OA Middle Blocker/Hitter OB. Se

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Answer:

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Explanation:

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2 years ago

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2 years ago

A graduated cylinder contains 62 ml of water. When a small metal block is added to the water, the volume of the water increases

lawyer [7]

Answer:

The density of the block is 7.4g/ml.

Explanation:

We can determine the volume of the metal block by taking the difference between the volumes measured in the graduated cylinder:

$V_{block}=65.5ml-62ml\\\\V_{block}=3.5ml$

Now, as we know that the average density of an object is calculated dividing its mass by its volume, we can calculate the density ρ of the metal block using the expression:

$\rho_{block}=\frac{m_{block}}{V_{block}}\\\\\rho_{block}=\frac{26g}{3.5ml}\\\\\rho_{block}=7.4\frac{g}{ml}$

Finally, it means that the density of the metal block is 7.4g/ml.

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2 years ago

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What two factors affect projectile motion? A) distance and angle B) distance and amplitude C) initial velocity and angle D) init

maksim [4K]

Answer:

C) Initial velocity and angle

Explanation:

The path of the projectile motion is a parabolic path. The motion of a projectile motion is studied by splitting the motion into 2 mutually perpendicular components; one along the horizontal x axis and other vertical y axis.

The position of the projectile at any time $t$ is given as:

$x=ut\cos \theta\\y=ut\sin \theta - \frac{1}{2}gt^2$

Where,

$u\rightarrow \textrm{Initial velocity}\\v\rightarrow \textrm{Final velocity}\\\theta\rightarrow \textrm{Angle of projection}\\g\rightarrow \textrm{Acceleration due to gravity}$

From the above equations, we conclude that,

The projectile motion depends on two factors:

i. Initial velocity ( $u$ )

ii. Angle of projection ( $\theta$ )

Option C is correct.

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2 years ago