Question

suppose we represent the distance between the ground by a positive integer and that is below the ground by negative integer then answer the following questions`°

1. An elevelator descends into a mine
shaft at the rate of 6 metre per minute what will be its position after 30 minute ​

Answer 1

it's velocity = displacement/time{ as we r using negative integer}.
velocity= -6metres/minute
time= 30 minutes
therefore displacement= velocity*time
= -6*30
= -180metres
that is 180 metres below the ground.
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