Question

A hotel building has parking floor at the
basement. A lift moves at the rate of 3 m per
10 seconds. If the lift starts coming down from
a height of 30 m, then find its position after
1 minute 10 seconds.​

Answer 1

lift moves at the rate of=3m per 10 sec(3×10) =30

lift starts coming down from a height of=30m

it's position after 1 min 10 sec=(1×10=10)will be:

so now,

(30×30=900)

(900×10=9000)

=9000

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Answer 2

Answer:  A lift moves at the rate of 3/10 m/s

                If the lift starts coming down at the height of 30m

                Its actual position- 3/10 * 70

                                                = 21 m/s

                Final Position- Initial Position (This is the formula)

                21-30

                = -9

                 Ans- It would be 9 m below the sea level

Step-by-step explanation: