How quickly are you moving relative to the ground?

[emily081715]

Homework Statement

On a long bus ride, you walk from your seat to the back of the bus to use the restroom. The bus is driving at 120 km/h , and you walk at 2.5 m/s from your seat to the restroom.
How quickly are you moving relative to the ground?

Homework Equations

v_pg=v_pb+v_bg

The Attempt at a Solution

120 km/h= 33.4m/s[/B]
v_pg= 33.4+ 2.5= 35.83 m/s

 

[FactChecker]

Be careful about what direction the bus and you are going. Use the appropriate sign for each. You shouldn't add if they are in opposite directions.