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4 ;" is a "; 3 w$="14000530": 3 w$="02250200": 3 STOP THE TAPE! 3 START THE TAPE 3 ;c$;" and ";v$: 3 ;"Software" 3 ;"Press:"; 3 ;"Press any key to continue": 3 ;"MA (Cantab.), MA (London)" 3 ;"Educational" 3 ;"CP Lawrence"; 3 to repeat this program"; 3 to load the next program"; 3 2 w$="06150200": 2 w$="04200200": 2 v$="Velocity": 2 s$="Distance": 2 d$="Direction": 2 DirectionS 2 ;s$;" and ";z$: 2 ;"x 1000 m/sec"; 2 ;"v = u + at" 2 ;"60 x 60" 2 ;") These are"; 2 ************* 2 "press ENTER to continue "; 1 z$="Displacement": 1 w$="236091": 1 w$="20130006": 1 w$="19080012": 1 w$="19080009": 1 w$="19070012": 1 w$="19030027": 1 w$="18070012": 1 w$="18040002": 1 w$="18010017": 1 w$="18000030": 1 w$="18000022": 1 w$="172091": 1 w$="17160011": 1 w$="17000230": 1 w$="16180311": 1 w$="152080000+32140108-24+24112120-32000084108-24-24072080000-32084052+24-24112040+32000141052+24+24": 1 w$="15000128": 1 w$="14200008": 1 w$="14000731": 1 w$="14000631": 1 w$="14000629": 1 w$="14000230": 1 w$="14000130": 1 w$="13000421": 1 w$="12190109": 1 w$="104148": 1 w$="104127": 1 w$="104108": 1 w$="09190003": 1 w$="09100200": 1 w$="08190109": 1 w$="03000931": 1 w$="03000230": 1 w$="02250600": 1 w$="02100600": 1 w$="02000730": 1 w$="02000228": 1 w$=" The Second "+e$+" ": 1 w$=" The Third "+e$+" ": 1 w$=" The First "+e$+" ": 1 f$="000048122188252122048000000012094061063094012000" 1 e$="Equation of Motion": 1 c$="Speed": 1 c$;" and ";v$: 1 b$="Vector": 1 a3 9+ 1 a2 1 a1 B# 1 a(n)=a(n)-1 1 a$="Scalar": 1 a$="Acceleration": 1 SOLIDS, LIQUIDS and GASES 1 SCALARS and VECTORS 1 Press ""s"" to stop 1 Equation of MotionA 1 DisplacementC 1 Created with Ramsoft MakeTZX 1 AccelerationD 1 ACCELERATION 1 ;t$;", t, can be eliminated from"'"the first two equations:": 1 ;t$;" (t)": 1 ;t$;" (sec)" 1 ;s$;" moved (Displacement),": 1 ;d$;": 'due East'." 1 ;;a$;"s and ";b$;"s": 1 ;,,"Gas molecules are much further apart than in solids or liquids.The cohesive force between them is negligible. They move at highspeeds, colliding with one another and with the walls of the vessel they are in. " 1 ;'"moved in unit "; 1 ;"v = u + at"; 1 ;"u + at"; 1 ;"screen is blank.": 1 ;"s = ut + 1 ;"quantities." 1 ;"part of the"; 1 ;"of them will"; 1 ;"molecules move"; 1 ;"liquid, press"; 1 ;"is heated the"; 1 ;"in a specified "; 1 ;"faster. More"; 1 ;"escape."; 1 ;"car's ";z$;".": 1 ;"______________"; 1 ;"_____________"; 1 ;"________"; 1 ;"________": 1 ;"What ";d$;" was he going in?": 1 ;"We have mentioned a"; 1 ;"To heat the"; 1 ;"To get an accurate value for his"'"actual ";c$;" at any particular"'"moment, you will need to measure"'"the ";s$;" moved in as short a"'t$;" as possible." 1 ;"Therefore the final ";v$;","; 1 ;"Therefore its "; 1 ;"There are three states or phasesin which matter commonly exists.These are solids, liquids and gases." 1 ;"The effect of heat on a 1 ;"The cohesive forces can be as strong as in a solid. But they are not permanent. The moleculesmove amongst each other, changing partners as they go.": 1 ;"Some escaping molecules will"'"collide with other molecules"'"above the surface, and bounce"'"back into the liquid. Others"'"will escape completely. They"'"have become 1 ;"So over the first half hour his"'"average ";c$; 1 ;"So at ";t$;" t the increase in"'v$;" will be at." 1 ;"Run tape (fast forward) to the end, turn it over, and then...": 1 ;"Press any key to stop": 1 ;"Otherwise the value obtained"'"will always be an average ";c$;".": 1 ;"Of course it is unlikely that he"'"travelled exactly 75 km in each"'"of the two hours.": 1 ;"No ";d$;" has been mentioned." 1 ;"Liquids therefore have no definite shape. They take the shape of whatever vessel they are in.": 1 ;"Liquid molecules also vibrate, but they attract and repel each other alternately.": 1 ;"Its ";v$;" = 60 km/h due East" 1 ;"Its ";c$;" = 60 km/h" 1 ;"In the first hour his average"'c$;" was 50 km/h." 1 ;"In each second the ";v$'"will increase by a m/sec.": 1 ;"In a solid the molecules are"'"held in fixed positions by"'"strong cohesive forces. The"'"molecules vibrate but do not"'"move around."''"To see what happens when a solid"'"is heated, press 'h'." 1 ;"If they are moving fast enough, molecules near the surface can free themselves from the attraction of their neighbours.": 1 ;"If the liquid"; 1 ;"If enough heat is supplied the"'"vibrations overcome the forces"'"which hold the solid together."''"The solid melts into a 1 ;"His average ";c$;" = 150 km/h"; 1 ;"Heat makes the molecules vibrate"'"more, and the solid expands." 1 ;"He could have covered 50 km in"'"the first hour and 100 km in the"'"second.": 1 ;"Gases therefore have no definitesize or volume. They are free tofill whatever space is availableto them." 1 ;"But, once again, he could have"'"covered 40 km in the first half"'"hour and 10 km in the next." 1 ;"Average ";v$;","; 1 ;"Although in everyday speech"'"'";c$;"' and '";v$;"' are used"'"to mean the same thing, in"'"physics they are different." 1 ;"A man drives 150 km in 2 hours.": 1 ;"A car travels 5 km due East.": 1 ;"A body moves with uniform"' 1 ;"A body accelerates at a rate of"'"a m/sec 1 ;"A ";b$;" quantity has both"'"Magnitude and ";d$ 1 ;"= change in ";v$: 1 ;"= 80 km/h...": 1 ;"= 75 km/h": 1 ;"= 10 m/sec" 1 ;"= 10 m/sec 1 ;"= 1 m/sec 1 ;"= -2.5 m/sec 1 ;"= -12.5 m/sec": 1 ;"= -12.5 m/sec 1 ;"= (36-0) km/h": 1 ;"= (35-80) km/h": 1 ;"6 cm to the right"'" 100 km/h due West" 1 ;"30 apples"'" 5 kilometres"'" 4 litres of paint"'" 60 metres/second" 1 ;"0 1 2 3" 1 ;"0 1 2 3 4 5" 1 ;"...and so on."''"At various times during the"'"journey his actual ";c$;" may"'"have been anything from 0 km/h"'"(stuck at the lights) to 110"'"km/h (on the motorway).": 1 ;") quantities." 1 ;") all "; 1 ;"(positive)" 1 ;"(negative)" 1 ;"(m/sec)": 1 ;"(Since"; 1 ;"(2nd Eq.)" 1 ;"(1st Eq.)": 1 ;"'h' until this"; 1 ;"'5 km' is the ";s$;" the car"'"has travelled.": 1 ;"'5 km due East' is the"; 1 ;" will be"'"constantly changing too.": 1 ;" will be constantly"'"changing." 1 ;" moved in"; 1 ;" moved in unit"; 1 ;" moved in a specified"' 1 ;" is defined as"' 1 ;" is defined as the"'"rate of change of "; 1 ;" is defined as "; 1 ;" in the same "; 1 ;" in equal periods of"' 1 ;" if it travels equal"' 1 ;" "; 1 ;" "; 1 ,a(n);" = ": 1 ********** 1 '''"If the ";v$;" changes with"'t$;" at a constant rate, the"'a$;" (positive or"'"negative) is uniform." 1 ''"You will now see representationsof each of these three states.": 1 ''"No ";d$;" has been mentioned.": 1 ''"If the ";v$;" of a body is"'"changing, then the body is"'"accelerating." 1 ''"If the ";v$;" is increasing,"'"the ";a$;" is positive.": 1 ''"If the ";v$;" is decreasing,"'"the ";a$;" is negative"'"(deceleration)." 1 ''"A car travels 5 km.": 1 ''"A ";a$;" quantity has a"'"Magnitude only." 1 '"Then, squaring both sides,": 1 '"Taking out the factor 2a,": 1 '"Imagine a car travelling at a"'"steady 60 km/h along a straight"'"road which points due East." 1 '"Imagine a car travelling at a"'"steady 30 km/h in a perfect"'"circle." 1 '"Change in final _ initial"'v$;" = ";v$;" ";v$: 1 '"A car slows down uniformly from"'"80 km/h to 35 km/h in 5 seconds.": 1 '"A car moves from rest to 36 km/h"'"(due East, say) in 10 seconds at"'"uniform ";a$;".": 1 "Third ";e$: 1 "Second ";e$: 1 "First ";e$: 1 s = ut + 1 molecules.": 1 from an initial"'v$;" of u m/sec.": 1 = u + v"; 1 + 2uat + a 1 + 2a(ut +