Amotorist travels at 270 km in p hours at a certain average speed. an expression for the distance that this motorist travelled in x hours at the same average speed is what

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)