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.
Wearing open backed shoes such as sandals and flip-flops can contribute to dry, cracked heels. In open-backed shoes, the fat on the heal expands sideways increasing pressure on the heel, which can lead to cracks. Skin Conditions. Skin conditions such as eczema, psoriasis and athlete's foot can contribute to dry feet. Eczema and psoriasis are skin conditions that result in dryness on the skin throughout the body.