AP物理C自测题与解析- AP Physics-C, 2014-2015 McGraw.pdf
32❯STEP2.DetermineYourTestReadiness
❯DiagnosticTest
Kinematics
1.WhichofthefollowingmustbetrueofanobjectT1
thatisslowingdown?
T3T2
(A)Itsaccelerationmustbenegative.
(B)Itsvelocitymustbesmallerthanitsacceleration.
4.Theboxpicturedabovemovesatconstantspeed
(C)Itmustexperiencemorethanoneforce.
totheleft.Whichofthefollowingiscorrect?
(D)Itsaccelerationanditsvelocitymustbein
oppositedirections.(A)Thesituationisimpossible.Becausemore
(E)Itsvelocitymustbenegative.forcesactright,theblockmustmovetothe
right.
2.Abaseballisthrownstraightup.Itreachesa(B)TT+T
peakheightof15m,measuredfromtheground,312
(C)TT+T
inatimeof1.7s.Treating“up”asthepositive312
(D)T=T+T
direction,whatistheaccelerationoftheball312
(E)Arelationshipamongthethreetensions
whenitreachesitspeakheight?cannotbedeterminedfromtheinformation
(A)0m/s2