Kinematics · JEE Main previous year questions

2012 2 questions

1. Q352012 · 26 May 2012 · Shift 1
   
   1. A.$34\mathrm{J}$
   2. B.$34.5\mathrm{J}$
   3. C.$4.5\mathrm{J}$
   4. D.$29.4\mathrm{J}$
   Show answer

   Answer: D

2. Q342012 · 12 May 2012 · Shift 1

   A projectile moving vertically upwards with a velocity of $200\mathrm{m}{\mathrm{s}}^{-1}$ breaks into two equal parts at a height of $490\mathrm{m}$. One part starts moving vertically upwards with a velocity of $400\mathrm{m}{\mathrm{s}}^{-1}$. How much time it will take, after the break up with the other part to hit the ground?

   1. A.$2\sqrt{10}\mathrm{s}$
   2. B.$5\mathrm{s}$
   3. C.$10\mathrm{s}$
   4. D.$\sqrt{10}\mathrm{s}$
   Show answer

   Answer: C