stions","basePath":"/gcse/physics/edexcel/newton-s-laws-and-momentum/questions","formulaUrl":null,"initialIndex":24,"initialQuestionWindow":[{"id":"3927772f-f59e-4769-acfc-98aa44b08ba2","revisionId":"95e67fd5-ba3d-4208-8702-23c409b41df9","questionNumber":null,"questionType":"LA","specification":"The gravitational field strength on the surface of Saturn's moon, Titan, is $1.35\\text{ N/kg}$.\nAn autonomous atmospheric probe landing on Titan has a mass of $84.0\\text{ kg}$.","difficulty":2,"difficultyBand":"easy","totalMarks":3,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"faad33e2-3a5d-4d70-829c-64acc1389f7b","label":null,"content":"Calculate the weight of this atmospheric probe on Titan.\nState the unit of weight.\n\nUse the equation:\n$$\\text{weight} = \\text{mass} \\times \\text{gravitational field strength}$$","markscheme":"- Substitutes the given values into the equation: $84.0 \\times 1.35$ M1\n- Calculates the weight to be $113.4$ A1\n- States the correct unit of weight as Newtons (or $\\text{N}$) B1","marks":3,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"use_weight_equation","label":"Use the weight equation","steps":[{"type":"text","order":0,"title":"Identify the quantities","content":"Use $W=mg$, where $W$ is weight, $m$ is mass and $g$ is gravitational field strength.\n\nHere, $m=84.0\\text{ kg}$ and $g=1.35\\text{ N/kg}$.","highlights":[{"text":"mass of $84.0\\text{ kg}$","location":"specification"},{"text":"gravitational field strength on the surface of Saturn's moon, Titan, is $1.35\\text{ N/kg}$","location":"specification"}]},{"type":"hyper_latex","block":{"nodes":[{"latex":"W=m\\times g"},{"latex":"W=\\htmlData{anchor=mass_used}{84.0\\text{ kg}}\\times\\htmlData{anchor=field_used}{1.35\\text{ N/kg}}"}],"highlights":[{"color":"sky","anchor":"mass_used"},{"color":"orange","anchor":"field_used"}]},"order":1,"title":"Substitute the values","description":"Put the mass and gravitational field strength into the equation. This correct substitution earns the M1 mark."},{"type":"text","order":2,"title":"Calculate and state unit","content":"Now multiply:\n\n$$84.0\\times1.35=113.4\\text{ N}$$\n\nSo the probe's weight is **$113.4\\text{ N}$**. This calculation earns the A1 mark. Weight is a force, so its unit is **newtons ($\\text{N}$)**, earning the B1 mark."}]}],"generatedAt":"2026-07-22T09:20:40.187Z","modelVersion":"gpt-5.6-terra+diagrams-1","explanationVersion":"v3"},"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"3b1790d6-d8e5-426f-8b19-6b59755d004d","revisionId":"d6a2200b-d877-450d-9a69-a8757b1957d7","questionNumber":null,"questionType":"LA","specification":"An automated guided vehicle (AGV) operating in a distribution centre has a mass of $125 \\text{ kg}$.","difficulty":3,"difficultyBand":"easy","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"9ddd1d70-b510-475f-84ad-42a23cf2402c","label":null,"content":"Determine the magnitude of the resultant force required to accelerate the AGV at a rate of $0.68 \\text{ m s}^{-2}$.\n\nState the units of your answer.","markscheme":"- Calculates the correct magnitude of the force using $F = ma$: $125 \\times 0.68 = 85$ M1\n- States the correct unit of force as $\\text{N}$ or $\\text{Newtons}$ A1","marks":2,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"newtons_second_law","label":"Use Newton's second law","steps":[{"type":"text","order":2,"title":"Choose the equation","content":"Use Newton's second law: the resultant force is given by $F = ma$, where $m$ is mass and $a$ is acceleration.","highlights":[{"text":"mass of $125 \\text{ kg}$","location":"specification"},{"text":"accelerate the AGV at a rate of $0.68 \\text{ m s}^{-2}$","location":"specification"}]},{"type":"hyper_latex","block":{"nodes":[{"latex":"F = \\htmlData{anchor=calculation}{125 \\times 0.68}"},{"latex":"F = \\htmlData{anchor=force}{85}"}],"highlights":[{"color":"green","style":"box","anchor":"force"}]},"order":3,"title":"Substitu

Newton's laws and momentum

Question 15

Newton's laws and momentum Questions

Newton's laws and momentum

Question 15

Newton's laws and momentum Questions