<u>The question does not provide enough information to complete the answer, so I'll assume the needed data to help you to solve your own problem</u>
Answer:
<em>The fly should need to move at 9,534.6 m/s to have the same kinetic energy as the automobile</em>
Explanation:
<u>Kinetic Energy
</u>
Is the capacity of a body to do work due to its speed and is computed by

We are not given enough data to compare the kinetic energy of the fly with that of the automobile. We'll assume the following characteristics:


So its kinetic energy is


The mass of the fly is

To have the same kinetic as the automobile:

Solving for 



The fly should need to move at 9,534.6 m/s to have the same kinetic energy as the automobile
Answer:
The momentum would be doubled
Explanation:
The magnitude of the momentum of the freight train is given by:

where
m is the mass of the train
v is its speed
In this problem, we have that the speed of the train is unchanged, while the mass of the train is doubled:

therefore, the new momentum is

so, the momentum has also doubled.
The answer is most likely A
Answer:
she should ve the one handing out the cookies each day, to make sure each child gets only one cookie a day.
<h3>2
Answers:</h3>
a) Velocity is a vector quantity
e) Velocity is a speed with direction
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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.
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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.