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Serggg [28]
3 years ago
10

A football player runs down a field with a speed of 8 m/s. How long will it take him to run 20m?

Physics
2 answers:
Shtirlitz [24]3 years ago
5 0
To find the answer for this question, you simply need to divide 20 by 8, which is the speed he is traveling. 

20 / 8 = 2.5

The football player will run 20 yards in 2 1/2 seconds.
Hope that helped! =)
Charra [1.4K]3 years ago
3 0

Answer:

Time taken, t = 2.5 seconds

Explanation:

It is given that,

Speed of the football player, v = 8 m/s

We have to find time taken by the football player to run 20 m. It can be calculated suing the formula of speed of the player i.e.

s=\dfrac{d}{t}

d = distance

t = time taken

t=\dfrac{d}{s}

t=\dfrac{20\ m}{8\ m/s}

t = 2.5 seconds

Hence, time taken by the football player is 2.5 seconds

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A harmonic wave is traveling along a rope. It is observed that the oscillator that generates the wave completes 43.0 vibrations
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Answer:

0.218

Explanation:

Given that

Total vibrations completed by the wave is 43 vibrations

Time taken to complete the vibrations is 33 seconds

Length of the wave is 424 cm = 4.24 m

to solve this problem, we first find the frequency.

Frequency, F = 43 / 33 hz

Frequency, F = 1.3 hz

Also, we find the wave velocity. Which is gotten using the relation,

Wave velocity = 4.24 / 15

Wave velocity = 0.283 m/s

Now, to get our answer, we use the formula.

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Wavelength = 0.283 / 1.3

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3 years ago
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Gnom [1K]

Answer:

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Answer:

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