AN ELEVATOR DESCENDS INTO A MINE SHAFT AT THE RATE OF 6 METRE PER MINUTE. IF THE DESCENT START FROM 20 METRE ABOVE THE GROUND LEVEL, HOW LONG WILL IT TAKE TO REACH -340 METRE
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Answer:
60 minutes
Step-by-step explanation:
rate of descent = 6m/ s;
start of descent = 20 meters above the ground.
total distance = 20 + 340
=360 meters
time taken = total distance / rate of descent
=360/6mpm
=360/6
answer = 60 minutes.
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