At t=0, three identical balls L, M, and N are launched vertically from ground level. Air resistance is negligible, and upward is taken as the positive direction.
• Ball L is thrown upward with an initial speed of 15m/s.
• Ball M is released from rest.
• Ball N is thrown downward with an initial speed of 5m/s.
At time t=2s, which ranking lists the balls’ velocities (most positive to most negative)?
a) N>M>L
b) M>L>N
c) L>M>N
d) L>N>M