Climate is best described as the

a. daily weather as predicted by a meteorologist.
b. short-term average of weather variations in a specific area.
c. long-term average of weather variations in a specific area.
d. areas where the temperature can drop below freezing

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)