Answer to Question #213366 in Civil and Environmental Engineering for syra

Question

In which direction must an object be fired, so that it's initial velocity is equal to the x- component of the instantaneous velocities along the travel?

Answer 1

At any moment in time, the direction of instantaneous velocity indicates the direction of motion of a particle. The magnitude of instantaneous velocity is equivalent to the magnitude of instantaneous speed. This occurs because a particle's motion can be estimated to be uniform for an infinitesimally tiny time span.