Aqa Physics Paper 2 Study Guide Questions And Correct Answers

diffuse reflection {Ans: the reflection of the light ray from the surface is reflected at many angles due to an uneven surface}when we combine the above two formulae: {Ans: 2as = v² - u²}fluid pressure {Ans: p = f ÷ a (pressure in Pa) = (force perp. to a surface in N) ÷ (area of that surface in m²)}factors that may affect braking distance (and thus stopping distance too) {Ans: tyre treads, incline, icy road, rain, brakepads, speed of car, terrain}Hydrogen gas nebula {Ans: A huge cloud of dust and gas - the hydrogen contracts under the force of gravity, more hydrogen is collected as the force of gravity increases}formula for echolocation {Ans: s = 0.5 X v X t it is 0.5 as the wave goes there and back}