What does FAI stand for?

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

Of is j/kg·k. if a 2.6 kg of isk to k,is ?

What are some important factors to consider when choosing a warm-up before your workout?