# Joint Entrance Examination/AIEEE 2009/Q077 KINEMATICS

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| Original Question by 164.100.170.4 Here's the question... Q77. A particle has an initial velocity of 3iˆ+4jˆ and an acceleration of 0.4iˆ+ 0.3jˆ. Its speed after 10 s is (1) 7 2 units (2) 7 units (3) 8.5 units (4) 10 units Posted by 164.100.170.4 05:48, 24 September 2009 (UTC) Post a reply! | What's Up? Latest discussions on the forum Introductory-Physics-Help Joint Entrance Examination/2000 Screening/Q013 Dimensional analysis User:Thewinster/HHF/Introductory-Physics-Preload Joint Entrance Examination/AIEEE 2009/Q070 VERNIER CALLIPER Joint Entrance Examination/AIEEE 2009/Q077 KINEMATICS Physics-Help User:Thewinster/Sandbox/Forum-Watch User:Thewinster/Sandbox Joint Entrance Examination/2000 Screening/Q004 Roatting triangular frame with beads, what quantities are conserved Joint Entrance Examination/2000 Screening/Q016 Effect of changing width of slits on interference pattern Joint Entrance Examination/2000 Screening/Q020 Melting of ice and evaporation - graph |
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Reply to the thread, posted by 164.100.170.4
Thread post
Additional notes
SOLUTION:[1]
v=u+at
=(3iˆ+4jˆ)+10(0.4iˆ+0.3jˆ)
=(3iˆ+4jˆ)+(4iˆ+3jˆ)
=7iˆ+7jˆ
These comments, along with the notes on the left, were contributed by 164.100.170.4 05:54, 24 September 2009 (UTC) :