If we ignore the effects of atmospheric resistance, the height of a projectile launched vertically upward at %1 m/s from a height of %2 m on %0 can be approximated by $y = %3$ m $t$ seconds after the projectile is launched.

Use a balanced difference quotient with $h = 0.0001$ to estimate how fast, and in what direction, the projectile is moving after 1 second.