When a fuse blows,
a. it's ok to replace it with a circuit breaker of the same rating
b. it is best to replace it with a bigger fuse so it won't blow the next
c. there has been enough current to melt a small piece of metal in time the fuse
d. the fire is about to start
(apex)

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.