Physics P3 Ocr Gateway B. Top Questions and answers, 100% Accurate, verified.

Physics P3 Ocr Gateway B. Top Questions and answers, 100% Accurate, verified. What is the equation for distance? Distance = speed / time What is the equaion for average speed? Average speed = (u + v) / 2 Distance time graphs a) What does the gradient represent? b) What do flat sections represent? c) A steeper gradient means what? d) Curves represent what? e) A "downhil" section means what? a) Speed b) The vehicle has stopped c) A faster speed d) Acceleration/deceleration e) It's changed direction and is coming back to its starting point How do you calculate speed from a distance time graph? Using the gradient (y/x) What is acceleration? How quickly the speed is changing You can also accelerate when changing direction, with or without changing speed What is the equation for acceleration? Acceleration = change in speed / time taken Speed time graphs a) What does the gradient represent? b) What do flat parts of the graph represent? c) What does a steeper gradient mean? d) What do uphill and downhill sections mean? e) What does a curve mean? a) Acceleration b) Steady speed c) Greater acceleration/deceleration d) Uphill = acceleration Downhill = deceleration e) Non–uniform (changing) acceleration/deceleration How do you work out the distance travelled from a speed time graph? The area under the graph Eg Triangle = (bxh) / 2 What is the difference between mass and weight? Mass = a measure of how much matter is in an object Weight = caused by the pull of gravity and is a force What is the equation for weight? weight = mass x gravitational field strength What are the 6 different types of forces? 1. Gravity or weight = always downwards 2. Reaction force from a surface = usually upwards 3. Thrust/push/pull due to an engine/rocket speeding something up 4. Drag/air resistance/friction = slowing something down 5. Lift due to a plane wing 6. Tension in a rope/cable How must the forces be in order for an object to be stationary? Balanced Force of gravity acts down Causes a reaction force from the surface