A pillow is thrown downward with an initial speed of 6m/s after 4 seconds, the pillow velocity is what?

scorpions are,

c.arachnids

  scorpions are animals in the order scorpiones, under the class arachnida, which makes them a distant cousin of spiders

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gas and liquid

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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