2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Motion in a Straight Line / सरल रेखा में गति

JEE Main & Advanced Physics Motion in a Straight Line / सरल रेखा में गति Question Bank Motion Under Gravity

  • question_answer
    A body projected vertically upwards with a velocity \[u\] returns to the starting point in 4 seconds. If \[g=10\]m/sec2, the value of \[u\] is       [KCET 1999]

    A)             5 m/sec           

    B)             10 m/sec

    C)             15 m/sec

    D)                      20 m/sec

    Correct Answer: D

    Solution :

                    Time of flight \[T=\frac{2u}{g}=4\ \sec \Rightarrow u=20\ m/s\]


You need to login to perform this action.
You will be redirected in 3 sec spinner