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Arada [10]
3 years ago
15

Of roller coaster car rapidly picks up speed as it rose down a slope as it starts down the slope, its speed is 4m/s . But 3 seco

nds later at the bar got bottom of the slope, is speed is 22m/s. What is its average acceleration?
Physics
1 answer:
lora16 [44]3 years ago
8 0

6 m/s ^2

Explanation:

Acceleration: the rate of change of velocity per unit of time.

a = (v − u) /t

a = (22 m/s − 4 m/s )/3s = 6 m/s ^2

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Explanation:

From Doppler effect,

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f2 = v/(v-vs) *f1

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