A bus accelerates at 2.0m/s²[E]. A women inside the bus is walking at 2.0 m/s [E]. What is her velocity realtive to the ground at: a) 1s b)2s ?

Question

The answer provided don't seem right:
a) 0.5 m/s[W]
b) 3m/s[W]

Answer 1

Sure don't. After 1 sec both she and the bus are moving east at 2 m/s so someone on the ground sees 4m/s. At 2 sec the bus is moving 4m/s so someone outside sees 6m/s