It is a vector. 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 object 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.ass is a scalar quantity because it doesn't have direction. Acceleration is a vector quantity because it has both magnitude and direction.
1. Exogenous Causes. 1  Dry Skin is the most common and obvious cause of itchy soles of the feet. 2  Contact Dermatitis is a skin reaction, which results from the exposure to allergens or irritants, such as certain soaps, cosmetics, detergents or even some plants, such as poison ivy.
Photo Credit Medioimages/Photodisc/Photodisc/Getty Images. Itching on the bottom of the feet has a variety of possible causes. Walking barefoot and wearing sweaty shoes make the feet susceptible to some disorders that cause itching. Other causes, such as scabies, may also cause itching on the bottom of the feet. A dermatologist can evaluate itchy feet to determine the cause and appropriate treatment. Athlete's foot, or tinea pedis, is a fungal infection of the feet that causes itching on the bottom of the feet and between the toes.