Answer: Speed can equal to velocity, even though they have different formulas.
Explanation: Speed is the rate at which an object covers distance or how much space the object passed, which is usually measured in miles, meters, or kilometers. Velocity is the rate at which the position changes. Therefore, speed is and can equal to velocity.
<u>Formulas:</u>
Speed = distance/change in time
Velocity = change in distance/ change in time
If there is less water in the bottle then the note played is lower, because there is more air to move around. This is one good hypothesis that could lead to a new experiment.
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ANSWER
EXPLANATION
A sketch of the vector is shown in the diagram in the attachment.
The side adjacent to the angle we want to find is 3.5 units and the opposite side is 3 units.
Let the angle between the vector and the x-axis be
then,
This implies that,
The correct answer is B
Therefore the angle 40.6° to the nearest tenth.