PHYSICS MIDDLE SCHOOL

A fighter bomber is making a bombing run flying horizontally at 500 knots (256m/s) at an altitude of 100.0m. a) How long will it take for the bomb to hit the ground after it is dropped from the plane?

b) How far will the bomb go over the ground (in the x direction) before it hits the target?

Answers

Answer 1
Answer:

Answer:

(a) t = 4.52 sec

(b) X = 1,156.49 m

Explanation:

Horizontal Launching

If an object is launched horizontally, its initial speed is zero in the y-coordinate and the horizontal component of the velocity v_o remains the same in time. The distance x is computed as.

\displaystyle x=v_o.t

(a)

The vertical component of the velocity v_y starts from zero and gradually starts to increase due to the acceleration of gravity as follows

v_y=gt

This means the vertical height is computed by

\displaystyle h=h_o-(gt^2)/(2)

Where h_o is the initial height. Our fighter bomber is 100 m high, so we can compute the time the bomb needs to reach the ground by solving the above equation for t knowing h=0

\displaystyle t=\sqrt{(2h_o)/(g)}

\displaystyle t=\sqrt{(2(100))/(9.8)}=4.52\ sec

(b)

We now compute the horizontal distance knowing v_o=256\ m/s

\displaystyle x=(256).(4.52)

X=1,156.49\ m

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You adjust the temperature so that a sound wave travels more quickly through the air. You increase the temperature from 30 degrees c to 36 degrees c. what is the velocity if the sound wave at this new temperature?

Answers

To calculate the velocity of the sound wave, we use this formula:
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Which of the following transitions will require the most thermal energy?a)1 g of ice at –15 °C to 1 g of ice at –5 °C
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If we say that one quantity is directly proportional to another quantity, does this mean that they are equal to each other?

Answers

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DIRECT PROPORTION:

  • The term "direct proportion" refers to the relationship between two variables in which a change in one causes a similar change in the other.

  • This means that when two quantities are directly proportional to one another, one quantity increases as the other increases and vice versa.

  • For example, if quantity A is directlyproportional to quantity B;
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Learn more at: brainly.com/question/14664532?referrer=searchResults

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It means that (one of them) divided by (the other one) is always the same number.

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A wave has a wavelength of 30 mm and a frequency of 5.0 hertz. What is its speed?

Answers

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