Question

An elevator travels from the first floor to the 25th floor of a building, a distance of 100 m in 30 s, what is the speed of the elevator in meter per second as well as in km/h. class 9
Pls help!

Answer 1

Answer:-

• Distance=100m
• Time=30s

We know that

$\boxed{\sf Speed=\dfrac{Total\:Distance}{Total\:Time}}$

$\\ \sf\longmapsto Speed=\dfrac{100}{30}$

$\\ \sf\longmapsto Speed=3.1m/s$

Converting to km/h

$\\ \sf\longmapsto 3.1\times \dfrac{18}{5}$

$\\ \sf\longmapsto 11.2km/h$