Penny puts fluffy in one wagon and pushes the wagon, once, as hard as she can. penny puts butch in the other wagon and pushes it once, also as hard as she can. both of the wagons travel across a level surface. will the motion of the two wagons be different?

a.
yes; fluffy's wagon will stop first.
b.
yes; butch's wagon will move faster.
c.
yes; fluffy's wagon will move faster.
d.
no; the wagons will both move in the same way.

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.