Standing on a moving walkway that carries people toward the terminal

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Standing on a moving walkway that carries people toward the terminal, a traveler gently rolls a suitcase

3.0\,\text{m/s}

backward (opposite the walkway’s motion) relative to the walkway. A stationary observer on the ground sees the suitcase moving forward at

1.0\,\text{m/s}

relative to the ground. Determine the walkway’s speed relative to the ground. State both magnitude and direction.