(2 marks) The student suggests that the diameter of the hole depends on the height from which
the ball is dropped, because this affects the speed
Suggest two other variables on which the size of the hole may depend​

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)