the object is moving, the an object moving What are the forces acting on at motorcycles, cars and object continues to move at a constant a skydiver at terminal speed? articulated lorries. at the same speed and in velocity. Why do cars have a top the same direction. So Explain that for an speed? the object continues to object travelling at move at the same terminal velocity the velocity. driving force(s) must equal the resistive force(s) acting on the object. 4.7.1.6 Newton’s Second Law: State Newton’s 0.5 Questions for students to Investigate how the Second Law. consider: mass of a trolley affects The acceleration of an object its acceleration. Use is proportional to the Calculate the resultant What objects light gates or ticker tape resultant force acting on the force acting on an accelerate? to take accurate object, and inversely object using the How can a car accelerate if measurements and add proportional to the mass of equation. it is moving around a circle mass to the trolley. the object. at a steady Rearrange the What determines how Investigate how the resultant force = mass × equation to find any quickly a vehicle driving force of a trolley acceleration other unknown accelerates? affects its acceleration. quantity. F = m a Why does a ball falling Add more mass to the through a liquid have a pulley to change the
the object is moving, the object continues to move at the same speed and in the same direction. So the object continues to move at the same velocity. an object moving at a constant velocity. Explain that for an object travelling at terminal velocity the driving force(s) must equal the resistive force(s) acting on the object. What are the forces acting on a skydiver at terminal speed? Why do cars have a top speed? at motorcycles, cars and articulated lorries. 4.7.1.6 Newton’s Second Law: The acceleration of an object is proportional to the resultant force acting on the object, and inversely proportional to the mass of the object. resultant force = mass × acceleration F = m a State Newton’s Second Law. Calculate the resultant force acting on an object using the equation. Rearrange the equation to find any other unknown quantity. 0.5 Questions for students to consider: What objects accelerate? How can a car accelerate if it is moving around a circle at a steady What determines how quickly a vehicle accelerates? Why does a ball falling through a liquid have a Investigate how the mass of a trolley affects its acceleration. Use light gates or ticker tape to take accurate measurements and add mass to the trolley. Investigate how the driving force of a trolley affects its acceleration. Add more mass to the pulley to change the
AQA-8465-SOW-MAI.DOCX