![]() ![]() Once these two components are found, they must be combined using vector addition to find the final velocity. After 5.00 s, what is the magnitude of the velocity of the ball?Īnswer: The velocity of the ball after 5.00 s has two components. The initial velocity of the ball is 15.0 m/s horizontally. ![]() G = acceleration due to gravity (9.80 m/s 2)ġ) A child kicks a soccer ball off of the top of a hill. Vertical velocity = initial vertical velocity - (acceleration due to gravity)(time) Horizontal velocity = initial horizontal velocity Horizontal distance = (initial horizontal velocity)(time) The horizontal and vertical velocities are expressed in meters per second (m/s). The units to express the horizontal and vertical distances are meters (m). Velocity is a vector (it has magnitude and direction), so the overall velocity of an object can be found with vector addition of the x and y components: v 2 = v x 2 + v y 2. The trajectory has horizontal (x) and vertical (y) components. The path the object follows is determined by these effects (ignoring air resistance). A projectile is an object that is given an initial velocity, and is acted on by gravity. ![]()
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