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anonymous
 one year ago
For which of the following is the velocity constant (speed/direction does not change)?
A cat escaping a dog by running in a straight line and then up a tree at a constant speed of 30 mph.
A cat escaping a dog by running in a straight line away from the dog and slowing down when danger is gone.
A cat escaping a dog by running at a constant speed around and around the house until the dog gets bored.
A cat ignoring the dog by sitting perfectly still.
i think its the one where the cat went up the tree but was wondering if it could be the last one
anonymous
 one year ago
For which of the following is the velocity constant (speed/direction does not change)? A cat escaping a dog by running in a straight line and then up a tree at a constant speed of 30 mph. A cat escaping a dog by running in a straight line away from the dog and slowing down when danger is gone. A cat escaping a dog by running at a constant speed around and around the house until the dog gets bored. A cat ignoring the dog by sitting perfectly still. i think its the one where the cat went up the tree but was wondering if it could be the last one

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SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1Running up a tree after running straight is a change in direction thus, although the speed is same 30mph, the velocity is different.

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1Now, in choice B, the cat is slowing down after having escaped from the dog. This is also a change in velocity (because the speed decreases).

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1When the cat is sitting still the whole time, its velocity is 0.0mph the entire time. That means the velocity doesn't change

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1And when the cat is running around the house, the cat is changing direction (thus velocity is different). (This is relevantly a circular motion, and acceleration is a nonzero constant, and thus veloicty of course isn't same)

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1hope that helps.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yea thx, i though it could be the last one but didnt know
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