Classify the statement below as either Speed or Velocity?
1 answer:
Answer:
Hello There!
It is Speed.
Because in the question it is said that at which speed car is travelling.
Speed is a scalar quantity.
If it is velocity then first know this that it is a vector quantity.
It must include both magnitude and direction.
If it is velocity then it would be 40 mph east or west or north or south.
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Answer:
Explanation:
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Ca 2+ would be the symbol because losing two negative electrons makes calcium's nucleus more positive by two protons.