A kicker kicks a football from the 5 yard line to the 45 yard line (both on the same half of the field). Ignoring air resistance, where along the trajectory is the speed of the football a minimum?

(a) At the 5 yard line, just after the football leaves the kicker's foot
(b) At the 45 yard line, just before the football hits the ground
(c) At the 15 yard line, while the ball is still going higher
(d) At the 35 yard line, while the ball is coming down
(e) At the 25 yard line, when the ball is at the top of its trajectory