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7nadin3 [17]
3 years ago
13

A ball is thrown with an initial speed of 10. Meters per second. At what angle above the horizontal should the ball be thrown to

reach the greatest height?
Physics
2 answers:
maria [59]3 years ago
6 0

The initial speed doesn’t matter.  To reach the maximum height, you need to launch straight up ... 90 degrees above horizontal.

Jlenok [28]3 years ago
5 0

Answer:

90 degree

Explanation:

The height for the projectile motion is given by

H = u^2 Sin^2 theta/ 2g

Height is maximum when sin theta is maximum.

Sin theta is maximum when it's value is 1.

So the value of theta is 90 degree.

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7 0
3 years ago
While traveling along a highway a driver slows from 31 m/s to 15 m/s in 8 seconds. What is the automobile’s acceleration? (Remem
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Answer:

The automobile's acceleration in that time interval is -2 m/s^2

Explanation:

The acceleration is defined as the rate of change of the velocity.

The average acceleration in a given lapse of time is calculated as:

A = (final velocity - initial velocity)/time.

In this case, we have:

initial velocity = 31 m/s

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Which of the following is a heterogeneous mixture? A. salt B. dye in water C. sugar water D. a garden salad
dedylja [7]
D garden salad : )

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3 years ago
A ball is accelerating down a hill. Which statement is true?
Andrew [12]

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8 0
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What distance does light travel in water, glass, and diamond during the time that it travels 1.0 m in vacuum? The refractive ind
lidiya [134]

Answer:

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refractive index (n) = \frac{velocity of light in air/vacuum}{velocity of light in substance}

velocity =\frac{distance}{time}

The time for travel is kept constant for all mediums.

refractive index (n) = \frac{\frac{distance in vacuum}{time} }{\frac{distance in medium}{time} }\\ \\=\frac{distance in vacuum}{distance in medium}

distance in medium = \frac{distance in vacuum}{refractive index of medium}

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For water, n= 1.33

S_{water} = \frac{1 }{1.33}

S_{water} = 0.752m

For glass, n=1.5

S_{glass}= \frac{1 }{1.5}

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S_{diamond} = \frac{1 }{2.42}

S_{diamond} = 0.413m

3 0
3 years ago
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