Answer each myth with facts and evidence, explain why they are un-true. 4. myth: an organism's kingdom only describes physical characteristics. fact: evidence: 5. myth: mammals and plants don't belong in the same domain. fact: evidence:

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)