Question

9. Alift moves at the rate of 3 m per 15 seconds in a skyscraper. If the lift starts coming down from
a height of 70 m then find its position after 12 minutes.​

Answer 1

Distance it can travel per 15 sec= 3 m

Distance it can travel in 1 min (15 x 4) = 3 x 4 = 12 m

Distance it started from ground = 70 m  

Distance it travelled in 12 minutes = 12 x 12 = 144 m

                                                       = 144 - 70

                                                       = 74 m (Hence lift will travel upwards after coming down 70 metres)

                                           

F. Statement : The lift will be 4 metres above it's current position

Answer 2

Answer:

i don't know . anyone know this answer . please solve step by step and send in this aap