Answer:
Mechanical Advantage = Output Force/Input Force
Velocity Ratio = Driving Gear/Driven Gear
Explanation:
A and c
do not complete the circuit there is no battery on a and paper dose not conduct electricity
The law of inertia states objects have a tendency to resist a change in motion. Given that, when the bus moved forward abruptly, the passengers had a natural tendency to resist the change in motion. Since they weren't moving before, they fell back because they had a tendency to stay in their state of equilibrium.