Cardiovascular fitness group in grade 10

Differentiate between density and speed​

Density of a substance is 8000kg/m cube its relative density is​

a cylindrical metallic wire is stretched to increase its length by 5% .calculate the percentage change in resistance ​

Draw the three body digrams (FBD) to show all force acting on a man started stin on a level flose and mention what force act on him? ​

Express the speed in M/s 18 Kmph=M/s​

What is Molecules can anyone tell u have to tell bigest then i will mark as Brainlist..........​

Acarwhichisinuniformmotioncovers100metersinevery5seconds.Toreachits destination,itneedstocover800meters.A.Calculatethedistancethatitwillcoverin20seconds.B.Calculatethetimetakenbythecartoreachitsdestination.​

Activity 15.2 Collect the objects and the materials listed in Table 15.1. Try to charge eachby rubbing with the materials mentioned in the Table. Record your findings.You can add more items to the Table.109Table 15.1FObjects RubbedMaterialsUsed for RubbingAttracts/does notAttract Piecesof PaperCharged/Not ChargedPsRefillPolythene.woollen clothPoty Atract pot changedh иBalloonPolythene, woollencloth. dry hairCEraserWoolaVSteel spoonPolythene,woollen clothchangedthertieshow​

give reason the force needed to start a cart is greater than the force needed to keep it moving with a uniform speed​