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CHAPTER 3A REST & MOTION

1. An object has a mass of 5 kg on the earth srface! "hat #s #ts mass #n $ee%

oters%ace 'here there #s no gra(#t)*a. Zero b. 2.5 kg b. 5 kg c. none of the above 

2. Of the fo++o'#ng s#tat#ons, 'h#ch one #s #m%oss#b+e*a. a body having velocity east and acceleration east

b. a body having velocity east and acceleration westc. a body having zero velocity and non-zero accelerationd. a body having constant acceleration and variable velocity 

3. If the s+o%e of the $#s%+acement t#me gra%h #s same for a++ %o#nts, then (e+oc#t)

#s-a. constant b. decreasing c. increasing d. none of these

4. The $#s%+acementt#me gra%h re%resents the mot#on of a car a+ong a stra#ght

+#ne! .r#ng 'h#ch #nter(a+ 'as the car at rest,

mo(#ng '#th constant (e+oc#t) an$ ha(#ng

acce+erat#on res%ect#(e+)-a. CD !C and D" b. #! !C and CDc. CD !C and #! d. !C CD and #!

5. The gra%h re%resents the stra#ght +#ne mot#on of 

a car! Ho' far $oes the car tra(e+ bet'een t / 0

secon$s an$ t / 5 secon$s*a. 4 $ b. 12 $ c. 24 $ d. 3% $

%. An object attache$ to a %arachte #s re+ease$ from an a#rcraft, an$ fa++s to'ar$s

Earth! "h#ch of these #ncreases to ma1#mm (a+e*a. &ravity b. 'elocity c. acceleration d. none of the above

(. An object #s %rojecte$ (ert#ca++) %'ar$ near the srface of the earth! At the

(er) to% of #ts %ath, the object2s (e+oc#t) #s ero, an$ #ts acce+erat#on #s-a. ) b. *.+ $,s2 downward c. *.+ $,s2 ward d. deends on ob/ect0s $ass

+. A bo) tra(e++#ng #n a tra#n mo(#ng at a constant (e+oc#t) on stra#ght track thro's

a ba++ (ert#ca++) %'ar$! The ba++ comes $o'n after 3 s! The ba++ +an$-a. in his hand b. /st ahead of hi$ c. /st behind hi$ d. none of these

*.  The (e+oc#t) of %roject#+e at #ts ma1#mm he#ght #s-a. ai$$ b. Zero c. nter$ediate d. ini$$

1).A %roject#+e #s %rojecte$ '#th #n#t#a+ (e+oc#t) of 4 m6s, mak#ng an ang+e of 7o 

)a1#s , the hor#onta+ com%onent of (e+oc#t) at #ts ma1#mm he#ght #s-a. Zero b. 5) $,s c. +%.% $,s d. (5 $,s

11.A %roject#+e #s %rojecte$ '#th a (e+oc#t) of 3 m6s at an ang+e of 7 o '#th 1a1#s,

the (e+oc#t) of %roject#+e at #ts ma1#mm he#ght #s-a. Zero b. 15 $,s c. 3) $,s d. (.5 $,s

12.A %roject#+e %rojecte$ '#th (e+oc#t) 8#, at a certa#n ang+e has a range e9a+ to

:R;! If the %roject#on (e+oc#t) #s $ob+e$ for the same ang+e as #n#t#a++), then the%ercentage change #n range of %roject#+e #s-

a. 2)) b. 3)) c. 1)) d. 5)13.The ang+e of %roject#on for 'h#ch the ma1#mm he#ght an$ the hor#onta+ range

of a %roject#+e are e9a+ #s-

a. 45o b. tan-1 1,46 c. tan-1 3,   √ 2 6 d. 7on of these

14. .#stance co(ere$ b) a free+) fa++#ng bo$) #n 0sec '#++ be-a. 4.*$ b. 1*.%$ c. 2*.2$ d. 44.1$

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15.The range of t'o %roject#+es %rojecte$ '#th same (e+oc#t#es bt $# #n the ?gre be+o' re%resents-a. 'ertical co$onent of dislace$ent of ro/ectileb. ?orizontal co$onent of dislace$ent of ro/ectilec. 'ertical co$onent of 'elocity of ro/ectiled. ?orizontal co$onent of 'elocity of ro/ectile

1+.The gra%h =@> #n the ?gre be+o' re%resents-a. Constant acceleration of ro/ectile0s $otionb. ?orizontal co$onent of dislace$ent of ro/ectilec. 'ertical co$onent of 'elocity of ro/ectiled. ?orizontal co$onent of 'elocity of ro/ectile

1*.The gra%h =.> #n the ?gre be+o' re%resents-

a. 'ertical co$onent of dislace$ent of ro/ectileb. ?orizontal co$onent of dislace$ent as fnction of ti$ec. 'ertical co$onent of 'elocity of ro/ectiled. ?orizontal co$onent of dislace$ent as fnction of s@are of ti$e

'i '

t,2 t #6 t!6

'f 

 A B

t C6

t D6

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