Velocity is a physical vector quantity; both magnitude and direction are needed to define it. The scalar absolute value (magnitude) of velocity is called speed, a quantity that is measured in metres per second (m/s or mâs â1) in the SI (metric) system.or example, 5 metres per second is a scalar (not a vector), whereas 5 metres per second east is a vector. If there is a change in speed, direction, or both, then the object has a changing velocity and is said to be undergoing an acceleration.
The duck bill is the result of unnatural overfill in the upper lip. It is make worse when volume is placed in the lip about the vermillion lip edge. The key is to appreciate that only a certain amount of volume is acceptable in a given lip.
There can be different causes of chapped lips. It can range from things such as the weather to a vitamin deficiency. The following are considered to be the more common causes for chapped lips. 1  Weather â The elements can cause of lips to dry out. 2  The winter can cause chapped lips because of its strong winds and cool temperature. 3  The summer can also affect our lips since too much exposure to the sun can make your lips chapped.