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3 years ago

If you run 40 meters in 60 seconds what is your average speed

Physics

2 answers:

Vikentia [17]3 years ago

8 0

1.49 MPH (Miles Per Hour)

yKpoI14uk [10]3 years ago

3 0

To calculate average speed, divide the distance by time.
Since the distance is 40 meters in 60 seconds, the problem will be 40/60.
If you divide 40 by 60, your answer will be 0.67 when rounded to the nearest hundredth.

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A sinusoidal wave travels along a string. The time for a particular point to move from maximum displacement to zero is 0.13 s. W

vitfil [10]

Answer:

Part a)

T = 0.52 s

Part b)

$f = 1.92 Hz$

Part c)

$speed = 3.65 m/s$

Explanation:

As we know that the particle move from its maximum displacement to its mean position in t = 0.13 s

so total time period of the particle is given as

$T = 4\times 0.13 = 0.52 s$

now we have

Part a)

T = time to complete one oscillation

so here it will move to and fro for one complete oscillation

so T = 0.52 s

Part b)

As we know that frequency and time period related to each other as

$f = \frac{1}{T}$

$f = \frac{1}{0.52}$

$f = 1.92 Hz$

Part c)

As we know that

wavelength = 1.9 m

frequency = 1.92 Hz

so wave speed is given as

$speed = wavelength \times frequency$

$speed = 1.92 \times 1.9$

$speed = 3.65 m/s$

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