1.Locomotiveexertona12320-kgboxcartomakeitaccelerateforwardat0.57m/s2.Howlongwillittaketheboxcartoreachitscruisingspeedof82km/h(51.0mphor22.8m/s)?

2.Thebuildersofthepyramidsusedalongramptolift22000-kg(22-ton)blocks.Howmuchworkwasdoneinraisingoneoftheblockstoaheightof53

3.Ifyourcaracceleratesfromrestatasteadyrateof4m/s2,howsoonwillitreach88km/h(54.7mphor24.4m/s)?

4.OnMars,theaccelerationduetogravityis3.71m/s2.Howfarwouldarockfallin5sifyoudroppeditonMars?

5.Abasketballplayercanleapupward0.44m.Whatishisinitialvelocityatthestartoftheleap?

6.Asprintercanreachaspeedof9.4m/sin0.95s.Ifthesprinter’saccelerationisconstantduringthattime,whatisthesprinter’sacceleration?

7.Howmuchdoesa84-kgpersonweighonearth?

8.Aswaterdescendsfromthetopofatallhydroelectricdam,itsgravitationalpotentialenergyisconvertedtoelectricenergy.Howmuchgravitationalpotentialenergyisreleasedwhen900kgofwaterdescends230mtothegenerators?

9.You’reusingawedgetosplitalog.Youarehittingthewedgewithalargehammertodriveitintothelog.Ittakesaforceof3100Ntopushthewedgeintothewood.Ifthewedgemoves0.2mintothelog,howmuchworkhaveyoudoneonthewedge?

10.You’resandingatable.Youmustexertaforceof32Nonthesandpapertokeepitmovingsteadilyacrossthetable’ssurface.Youslidethepaperbackandforthfor21minutes,duringwhichtimeyoumoveit1000m.Howmuchworkhaveyoudone?