1. a cigarette vendor has to move with the bus as he jumps off the bus. a. law of inertia b. law of acceleration 2. an empty grocery cart runs faster than the loaded one because it ia easier to move. a. law of inertia b. law of acceleration 3. the engine of a bus uses more energy in travelling when it is overloaded with passengers than when it is only loaded to its seating capacity. a law of inertia b. law of acceleration​