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.
Causes of Dry Skin. 1  Medical conditions such as eczema, psoriasis and dermatitis can all cause dry skin of the feet. 2  Footwear can cause dry skin of the heel when wearing open backed shoes. 3  Sometimes as we get older the skin becomes dryer.auses of Dry Skin. 1  Medical conditions such as eczema, psoriasis and dermatitis can all cause dry skin of the feet. 2  Footwear can cause dry skin of the heel when wearing open backed shoes. 3  Sometimes as we get older the skin becomes dryer.