Physics Questions & Solutions

Physics Questions & Solutions - CORRECT ANSWERS1st law - CORRECT ANSWERS-a body will remain at rest or move at a constant velocity if the resultant force acting on the body is zero 2 main groups - CORRECT ANSWERS-contact and distant 2nd law - CORRECT ANSWERS-if a resultant force acts on a body the body will not remain at rest or move at constant velocity, it will accelerate a biomass - CORRECT ANSWERS-less demand on fossil fuels a force can - CORRECT ANSWERS-change the direction of motion change the shape of things start objects moving and slowing down a fossil fuels - CORRECT ANSWERS-transporting oil and gas to power stations a geothermal - CORRECT ANSWERS-no fuel is needed a hydro-electricity - CORRECT ANSWERS-no waste or pollution is produced a nuclear - CORRECT ANSWERS-produces small amount of waste a nuclear fission - CORRECT ANSWERS-heat energy produced is used to produce electricity a nuclear fussion - CORRECT ANSWERS-plentiful and the product helium is inherit a solar - CORRECT ANSWERS-produces no waste or pollution a tidal - CORRECT ANSWERS-tides are totally predictable a wave - CORRECT ANSWERS-can produce a great deal of energy a wind - CORRECT ANSWERS-free and wind farms need no fuel acceleration is - CORRECT ANSWERS-rate of change in velocity acceleration= - CORRECT ANSWERS-velocity/time air resistance or drag - CORRECT ANSWERS-occurs when the object moves through air or fluid alpha α ⁴ He ₂ - CORRECT ANSWERS-helium nucleus big heavy slow positively charged poor penetration-stopped by paper strong ionisation deflected by magnetic field