Linear motion

Physics · Unit 2 — Linear motion and w aves · Linear motion and force

Learning objectives (27)

LO-1Analyse the area under a force–displacement graph using geometric methods.LO-2Analyse the area under a force–time graph using geometric methods. Energy LO-3Calculate resultant vectors through the addition and subtraction of two vectors in one dimension.LO-4Compare instantaneous and average velocity.LO-5Construct free-body diagrams representing forces such as the force due to gravity (weight), the normal force, tension, friction, drag and applied forces acting on an object.LO-6Contrast vectors and scalars, and use these terms to categorise physical quantities, e.g. velocity and speed.LO-7Describe the concepts of displacement, velocity and acceleration.LO-8Describe the concepts of mechanical work, kinetic energy and gravitational potential energy.LO-9Describe the concepts of momentum and impulse.LO-10Describe the principle of conservation of momentum.LO-11Describe the three laws of motion of classical mechanics and give examples of each.LO-12Determine the resultant force acting on an object in one dimension.LO-13Discuss the differences between elastic and inelastic collisions.LO-14Identify forces acting on an object.LO-15Interpret energy–time graphs.LO-16Interpret experimental data to determine the value of acceleration due to gravity on the Earth’s surface. Classical mechanics LO-17Interpret linear motion graphs to describe the motion of an object, referring to the - intercepts, gradients and uncertainties (using minimum and maximum lines of best fit) of displacement–time and velocity–time graphs - areas under velocity–time and acceleration–time graphs using simple geometry.LO-18Linearise a dataset that suggests a non-linear relationship (e.g. t2 versus s) and calculate the equation of the linear trend line.LO-19Solve problems involving elastic collisions and inelastic collisions (including explosions) using ∑ 1 2 𝑚𝑣𝑏𝑒𝑓𝑜𝑟𝑒 2 = ∑ 1 2 𝑚𝑣𝑎𝑓𝑡𝑒𝑟 2.LO-20Solve problems involving kinetic energy and gravitational potential energy using 𝐸𝑘 = 1 2 𝑚𝑣2 and ∆𝐸𝑝 = 𝑚𝑔∆ℎ.LO-21Solve problems involving momentum, impulse, the conservation of momentum and collisions in one dimension using 𝑝 = 𝑚𝑣 and ∑ 𝑚𝑣𝑏𝑒𝑓𝑜𝑟𝑒 = ∑ 𝑚𝑣𝑎𝑓𝑡𝑒𝑟.LO-22Solve problems involving work done by a force using 𝑊 = ∆𝐸 and 𝑊 = 𝐹𝑠.LO-23Solve problems relating to uniformly accelerated motion in one dimension using 𝑣 = 𝑢 + 𝑎𝑡, 𝑠 = 𝑢𝑡 + 1 2 𝑎𝑡 2 and 𝑣2 = 𝑢2 + 2𝑎𝑠.LO-24Solve problems using the laws of classical mechanics and 𝑎 = 𝐹𝑛𝑒𝑡 𝑚.LO-25Symbolise vectors graphically and algebraically, e.g. F, F̃ and F⃗.LO-26Understand the study of biomechanics applies the laws of forces and motion, and through direct measurement, computer simulation and mathematical modelling lead to a better understanding of human movement and improved athletic performance.LO-27Use vertical error bars when plotting data to determine the uncertainty of the gradient and intercepts using minimum and maximum lines of best fit.

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