Danger Time

Classical Mechanics Level 4

A terrorist places a bomb at a horizontal distance of \(6 m\) from the foot of building of height \(8 m\). When the bomb explodes its fragments fly in all direction with a velocity of \(20 m/s\). The man on the top of the building will be in danger for a period of time \(t = a \sqrt \frac {11}{5} \).Find the value of \(100 \times a\)

Details :

  • All particles after explotion falls under gravity. All other force are neglected.

  • \(g= 10 m/s^2 \)

  • \(t \) the time period in which man will be in danger not not the value of time.


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