A large crate is placed on the bed of a truck but is not tied down. As the truck accelerates forward, the crate slides across the bed until it hits the tailgate. Explain what causes this. If the driver slammed on the brakes, what could happen to the crate

No because scientist are still changing there mines today so they are not correct to this day

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.

The upward force acting on the wing of a airplane in flight is known as the "lift" force. (d)