If 10 Coulombs flow through a circuit every 2 seconds, what is the current? A. Not enough info
B. 5 A
C. 10 A
D. 1 A

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)