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5 votes
Suppose you are on a conveyor belt walkway at an airport. The walkway is moving at 0.50 m/s. You walk backward at 0.80 m/s to hand your suitcase to a friend who is 3.0 m behind you. A security guard stands alongside the walkway watching this. What is your speed relative to the guard?

a. 0.50 m/s
b. 1.30 m/s
c. 0.30 m/s
d. 0.80 m/s

User Jpaguerre
by
8.6k points

1 Answer

2 votes

Your speed is (0.5 m/s forward) + (0.8 m/s backward)

= (0.3 m/s backward) , according to witnesses
who are not on the walkway.

It doesn't matter where you're headed, or why.
User MarcinKonowalczyk
by
7.7k points
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