Question

A student sits in the school bus traveling to her school. If the student stands up and moves at 1.5m/s toward the rear of the bus that travels at 10m/s to the east,what is her velocity relative to the observer on the side of the road? If she moves at 2.1 m/s toward the front of the bus traveling at 15 m/s east, what is her velocity relative to the observer on the side of the road?

(I feel if I get guidance on the first part the 2nd I could do by myself)

Answer 1

if moving in the same direction as the bus, just add the speeds.

If moving in the opposite direction, subtract her walking speed from the bus's speed.