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Stels [109]
2 years ago
13

A plane is flying east when it drops some supplies to a designated target below. The supplies land after falling for 10 seconds.

How high above the ground was the airplane when the supplies were dropped? (Hint: d = 1/2gt2; g = -9.8 m/s2)
Question 3 options:

120 meters


490 meters


980 meters


49 meters
Physics
1 answer:
Dahasolnce [82]2 years ago
3 0

The answer is B) 490.

Just fill in the formula

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When the displacement in SHM is equal to 1/4 of the amplitude xm, what fraction of the total energy is (a) kinetic energy and (b
Anna71 [15]

Answer:

\frac{KE}{TE} = \frac{15}{16}

b)

\frac{U}{TE} = \frac{1}{16}

Explanation:

Let the amplitude of SHM is given as A

so the total energy of SHM is given as

E = \frac{1}{2}kA^2

now we know that

a)

kinetic energy is given as

KE = \frac{1}{2}k(A^2 - x^2)

here

x = \frac{A}{4}

so now we have

KE = \frac{1}{2}k(A^2 - \frac{A^2}{16})

KE = \frac{15}{32}kA^2

now its fraction with respect to total energy is given as

\frac{KE}{TE} = \frac{15}{16}

b)

Potential energy is given as

U = \frac{1}{2}kx^2

so we have

U = \frac{1}{32}kA^2

so fraction of energy is given as

\frac{U}{TE} = \frac{1}{16}

7 0
2 years ago
Select the correct answer.
navik [9.2K]

Answer:

i think option C is correct answer

8 0
1 year ago
A student starts a stop-watch when the bob reaches to point M.He counts each time the bob changes direction and stop the watch o
azamat

Answer:

m

Explanation:

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3 0
2 years ago
Particles of hot soup rise slowly in a pot simmering on a stove. As the hot soup nears the surface, it begins to cool. The coole
rjkz [21]

Answer:

The constant movement of the soup in the pot is an example of convection.

Explanation:

Convection is the movement of hot and less-hot particles in a gas or liquid, transmitting heat with that motion. Therefore, the movement of soup that heats up the surface is an example of convection.

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State whether these questions are true or false.
s2008m [1.1K]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

The given statements are :

Q1) Distance formula is displacement/time T/F?

- False

Q2)velocity formula is = displacement/time T/F?

- True

4 0
2 years ago
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