# Danger Time

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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