  A scalar has only magnitude. A vector has magnitude and direction.   Acceleration is a vector because it has magnitude and direction. That's why an o â¦ bject can be said to be accelerating if it has a circular rotation and a constant speed; even though it's speed isn't changing, it's direction constantly is. vector has magnitude and direction.   Acceleration is a vector because it has magnitude and direction. That's why an o â¦ bject can be said to be accelerating if it has a circular rotation and a constant speed; even though it's speed isn't changing, it's direction constantly is.
Chronic dry coughs are usually caused by irritation from cigarette smoke, environmental irritants, allergies, postnasal drip, or asthma. Several chronic lung diseases also cause a dry, hacking cough. Some people cough out of habit for no clear reason. Gastric reflux may also cause a chronic dry cough. Usually you will also have other symptoms, such as heartburn, burning in the throat, or increased saliva.
The freeMD virtual doctor has found 15 conditions that can cause Dry Cough and Repeated Hiccups. There are 4 common conditions that can cause Dry Cough and Repeated Hiccups. There are 4 uncommon conditions that can cause Dry Cough and Repeated Hiccups. There are 7 rare conditions that can cause Dry Cough and Repeated Hiccups. FreeMD FreeMD is provided for information purposes only and should not be used as a substitute for evaluation and treatment by a physician.