// Numbas version: exam_results_page_options
{"name": "Calculate the distance an object falls in a given time under gravity on various planets.", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "Calculate the distance an object falls in a given time under gravity on various planets.", "tags": [], "metadata": {"description": "<p>Students need to substitute a value into an equation and solve it. The equation constant (gravity) and the value (time) are both randomised.</p>", "licence": "Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International"}, "statement": "<p>On {planets[idx]}, the equation</p>\n<p>$d=\\var{gravities[idx]/2}t^2$</p>\n<p>can be used to express the distance ($d$ metres) that an object falls in $t$ seconds, if air resistance is ignored.</p>", "advice": "<p>The distance fallen is $d=\\var{gravities[idx]/2} \\var{t}^2 = \\var{d} $ metres, which is rounded off to $\\var{round(d)}$ metres.</p>", "rulesets": {}, "extensions": [], "variables": {"planets": {"name": "planets", "group": "Ungrouped variables", "definition": "['Earth','Moon','Mercury','Venus','Mars','Jupiter','Saturn','Uranus','Neptune','Pluto']", "description": "", "templateType": "anything"}, "gravities": {"name": "gravities", "group": "Ungrouped variables", "definition": "[9.8,1.6,3.7,8.9,3.7,24.8,10.4,8.9,11.2,0.6]", "description": "", "templateType": "anything"}, "idx": {"name": "idx", "group": "Ungrouped variables", "definition": "random(0..9)", "description": "", "templateType": "anything"}, "t": {"name": "t", "group": "Ungrouped variables", "definition": "random(0..30)", "description": "<p>fall time in seconds</p>", "templateType": "anything"}, "d": {"name": "d", "group": "Ungrouped variables", "definition": "gravities[idx]/2*t*t", "description": "<p>Fall distance</p>", "templateType": "anything"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["planets", "gravities", "idx", "t", "d"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>How far does an object fall in {t} seconds on {planets[idx]}?</p>\n<p>Round your answer to the nearest whole number of metres.</p>", "minValue": "round(d)", "maxValue": "round(d)", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "showFractionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always", "contributors": [{"name": "Merryn Horrocks", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/4052/"}]}]}], "contributors": [{"name": "Merryn Horrocks", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/4052/"}]}