Answer: Zane was 25 meters below the edge of the volcano when he started and he took 6.25 seconds to reach the edge of volcano.
Step-by-step explanation:
Since wee have given that
Speed at which he climb up = 4 meters per second
After 3 seconds, he was 13 meters below the edge of the volcano.
When he started climbing, Position of him below the edge of the volcano is given by
Time taken by Zane to reach the edge of the volcano is given by
Hence, Zane was 25 meters below the edge of the volcano when he started and he took 6.25 seconds to reach the edge of volcano.