Physics Questions & Answers

Physics Questions & Answers - CORRECT ANSWER1st law - CORRECT ANSWER- 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 ANSWER- contact and distant 2nd law - CORRECT ANSWER- 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 ANSWER- less demand on fossil fuels a force can - CORRECT ANSWER- change the direction of motion change the shape of things start objects moving and slowing down a fossil fuels - CORRECT ANSWER- transporting oil and gas to power stations a geothermal - CORRECT ANSWER- no fuel is needed a hydro-electricity - CORRECT ANSWER- no waste or pollution is produced a nuclear - CORRECT ANSWER- produces small amount of waste a nuclear fission - CORRECT ANSWER- heat energy produced is used to produce electricity a nuclear fussion - CORRECT ANSWER- plentiful and the product helium is inherit a solar - CORRECT ANSWER- produces no waste or pollution a tidal - CORRECT ANSWER- tides are totally predictable a wave - CORRECT ANSWER- can produce a great deal of energy a wind - CORRECT ANSWER- free and wind farms need no fuel acceleration is - CORRECT ANSWER- rate of change in velocity acceleration= - CORRECT ANSWER- velocity/time air resistance or drag - CORRECT ANSWER- occurs when the object moves through air or fluid alpha α ⁴ He ₂ - CORRECT ANSWER- helium nucleus big heavy slow positively charged poor penetration-stopped by paper strong ionisation deflected by magnetic field