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Veseljchak [2.6K]
2 years ago
13

An object moving at 15 m/s slows uniformly at a rate of 2.0 m/s each second for 5.0 s. What is its final speed?​

Physics
1 answer:
NeX [460]2 years ago
8 0
Hey there!

We are given ,

Acceleration, a = -2m/s^2

Initial velocity , u = 15m/s

Time , t = 5 seconds

We know that ,
V=u+at

Now , final speed ,

V = 15+(-2)(5)

V = 15-10

V = 5 m/s -> final speed

Hope this helps you dear :)
Have a good day <3

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A vacuum cleaner produces sound with a measured sound level of 75.0 dB. (a) What is the intensity of this sound in W/m2? W/m2 (b
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Part a)

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Part b)

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Part a)

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here we know that

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now we have

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Part b)

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here we know that

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so we have

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3 years ago
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Answer:

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