Reevaluate students' understanding by posing conceptual questions. The following is a list of preconceptions and misconceptions that high school physics teachers and college professors have recognized in their students. Alternating Current Wave Particle Duality Models of the Atom 0. Two objects side by side must have the same speed. Acceleration and velocity are always in the same direction.
Velocity is a force.
If velocity is zero, then acceleration must be zero too. Acceleration is the same as velocity. The acceleration of a falling object depends upon its mass. Freely falling bodies can only move downward. There is no gravity in a vacuum.