Remember you can only use this equation if there is no change in acceleration. Since the initial velocity vi 0 for an object that is simply falling the equation reduces to. Is the final velocity.
Vec vleft t right int3tvec i - 4bfe - tvec j 12t2vec kdt frac32t2vec i 4bfe - tvec j 4t3vec k vec c.
Going back to the problem of the cars speed consider two cars starting from the same point and traveling at the same average speed of 50 miles per hour. There are many reasons for you to use a velocity calculator. The velocity of an object is given by the equation vt 4t where the velocity v is measured in m s the time t is measured in seconds. As a quick example lets say a train accelerates at a constant rate from 30 ms to 80 ms.