Answer:
1) The anchor was released from 72.5 meters above the water's surface.
2)The anchor took 29 seconds to reach the water's surface
Step-by-step explanation:
The rate of drop of anchor = 2.5 meters per second
So, total depth covered by anchor after 45 seconds
= 2.5 meters x 45 seconds
= 112.5 meters
But after 45 minutes, the anchor was 40 meters deep.
So, extra distance traveled by anchor = Total distance covered by anchor - depth of water
= 112.5 meters - 40 meters = 72.5 meters
Hence, the anchor was released from 72.5 meters above the water's surface.
Now, speed of anchor = 2.5 m/sec
So, total time taken to cover extra 72. 5 meters = 72. 5 meters / 2.5 m/sec
= 29 seconds
Hence, the anchor took 29 seconds to reach the water's surface.
