The diagram below shows the path of a planet around a star. At which point does the planet have the highest acceleration?
O A. Point A
O B. Point
O C. Point D
OD. Point B

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)