Question

At an airport, two business partners both walk at 1.5 m/sm/s from the gate to the main terminal, one on a moving sidewalk and the other on the floor next to it. The partner on the moving sidewalk gets to the end in 60 ss, and the partner on the floor reaches the end of the sidewalk in 90s.
Required:
What is the speed of the sidewalk in the Earth reference frame?

Answer 1

Answer:

$v=0.8m/s$

Explanation:

From the question we are told that

Distance $d=1.5m/sm/s$

Time  $t_1=60s$  

Time  $t_2=90s$  

Generally the  the equation for the distance traveled is mathematically given as

$d=vt$

$d=1.5*90$

$d=138m$

Generally equation for speed of side walk is mathematically given as

$d=(v+u)t$

$v=\frac{d}{t}-u$

$v=\frac{138}{60}-1.5$

$v=0.8m/s$