Question

A person on a moving sidewalk travels 40 feet in 8 seconds. The moving sidewalk has a length of 200 feet. How long will it take to move from one end to the other?

Answer 1

The man covers 200 ft in 40 seconds.

Explanation:

A person is moving on the sidewalk from one end to the other end.

He walks 40 feet in 8 seconds.

Therefore his speed =
`(distance covered)/(time)`

=
`(40)/(8)`

= 5 ft/
`s^(2)`

He covers the sidewalk distance at a rate of 5 feet every second.

To calculate the time taken to cover 200 ft,

time =
`(distance to be covered)/(speed)`

time =
`(200)/(5)`

time = 40 seconds

Hence the man covers 200 ft in 40 seconds.