- #1

Talha

Lets say i throw a ball upwards so what does time t=0 represent, the time after which the ball is released or the time at which ball is about to be released?

Secondly in projectile motion if i throw a ball horizontally at a height then time zero has zero vertical velocity but a non zero horizontal velocity, why is that(considering the first option that it represents time after ball is released so it must have some vertical velocity even in points due to 9.8m/s^2 acceleration)?