Vector calculus was developed in the late 19th century by J. Willard Gibbs and Oliver Heaviside, with notation established by Gibbs and Edwin Bidwell Wilson in their 1901 book Vector Analysis. A vector is a quantity that has both direction and magnitude. Vectors are used to describe many phenomena in daily life, such as movement between locations like traveling from Mirpur-12 to Mirpur-10 to Kalshi, the trajectory of a cannonball which is influenced by factors like caliber and range, and the forces, torque, acceleration and velocity involved when riding a roller coaster. Vectors also describe wind direction and speed in activities like sailing, and can represent the motion and angles involved in various sports like football,