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attashe74 [19]
3 years ago
13

When the balloon sticks to the wall (assuming it sticks to the wall). It is

Physics
1 answer:
inn [45]3 years ago
8 0
The answer is false
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What force is necessary to accelerate a 2500 kg care from rest to 20 m/s over 10 seconds?
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Which of the following statement is not true about machines?
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The answer to this question is D or the last one 

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Please help 25 points!
cricket20 [7]
<h3>2 Answers:</h3>

a) Velocity is a vector quantity

e) Velocity is a speed with direction

=================================================

Explanation:

If we know the velocity of an object, then we know how fast it's going (speed) and where it's going (direction). It is a vector because the direction of the vector determines the direction, and the length of the vector (aka magnitude) determines the speed. So in a sense we've built in two facts of data into one visual.

An example of velocity: 10 miles per hour north. Here we have the speed of 10 mph and the direction north.

-------------------

Extra info:

  • Choice B contradicts choice A, so we can cross choice B off the list.
  • Choice C is false because speed is a scalar, or single quantity, and not a vector. As mentioned earlier, speed is a part of velocity, but they aren't the same exact thing.
  • Choice D is false because the velocity does not account for net force. We don't have any force information built into the velocity.
8 0
3 years ago
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