Question

an elevator begins to descends from 15 metre above the ground at the rate of 5 metre per minute what will be the position after 45 minutes​

Answer 1

Answer:

xtypdkcixwfkgpvvpl ok

Answer 2

change in position of elevator in 45 minutes=(-5)×45

=-225m [(-a)×b=-(a×b)]

negative sign represents below ground level

so, 225m below ground level

Now the final position of the elevator =-225+15=-210m

i.e. 210m below ground level

answer= 210 below ground level