Conservation of energy

Science tip: Many questions are about the conservation of energy. Remember that energy cannot be created or destroyed, only converted into other forms of energy. Answers must also be very specific. Instead of saying “The toy car eventually came to a stop because the kinetic energy was lost to its surroundings” you have to specify[…]

Force versus Energy

Science tip: "Force" and "Energy" mean different things. Force is a push or a pull on an object, and can cause an object to change its momentum (different direction or speed). Energy is the capacity to do work. Energy has a few forms in the syllabus – electrical, gravitational potential, kinetic chemical, light, heat, sound.[…]