1. A particle is projected from ground in vertical direction at t = 0. At t = 0.8s, it reaches h = 14 m. It will again come to same height at t = 
  • 2s
  • 14/5 s
  • 3s
  • 7/2 s
2. In the figure shown, the blocks A and C are pulled down with constant velocities u. Acceleration of block B is 

a .   u 2 b tan 2 θ s e c 2 θ b .   u 2 b tan 3 θ c .   u 2 b tan θ s e c 2 θ d .   z e r o

i dont know
 
  • 1
i dont know
  • -2
i also dont know please answer it
  • 0
Which question number
  • 0
Two qs. are visible..friend... Whichever u can , try solving it..
  • 0
Experts please answer this !!!
  • -1
May i get an answer to this qs. ?
  • 0
Why dont i get the answer to this ?
  • 4
This is the answer of first question asked. Hope it helps and if my answer is wrong then plz let me know.

  • 2
Firstly use string constraints

  • 0
What are you looking for?