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✒️Plz solve along with explanation!!
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Refer to the attachment ....
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AnswEr :-
Given,
Initial speed of bomb = 20 m/s
Height = 80 m
We know :
❥ h = ut +1/2 gt²
➩ 80 = 0(t) + 1/2 (g)(t)²
➩ 80 = 1/2 ×10×t² =5t²
➩ t = √16
➩ t=4 s
We know :
❥ Distance = speed × time
Distance travelled by hunter in 2s
⇒ 10×2 = 20m.
Range of the bomb :
⇒ 20 ×4=80m.
∴ remaining distance=80-20=60m.
Now,
V - horizontal = 60/2 = 30m/s
To find V-vertical :-
❥ s = ut+1/2 at²
➩ 0=v(2)+1/2 ×g×4
➩v=10m/s
Resultant velocity :-
❥ √ Vx ² + Vy ²
➩ √ 30²+10² =√900+100
➩ √ 1000 = 10√10 .
∴ The firing speed of the bullet is 10√10 m/s.
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