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The equation of trajectory ofa projectil...

The equation of trajectory ofa projectile is `y = 10x-5/9x^2` If we assume `g = 10 ms^(-2)`, the range of projectile (in metre) is

A

36

B

24

C

18

D

9

Text Solution

Verified by Experts

`bars_1=4hati-4hatj+7hatk,bars_2=2hati-2hatj+5hatk`
`baru_1=0.4hati`
`baru^2`
From the question
`s_1+(u_1)t=s_2+(u_2)t`
`(4hati-4hatj+7hatk)10=(2hati-2hatj+5hatk)+(u_2)(10)`
`2hati-6hatj+2hatk+4hati=u_2(10)`
`u_2=1/(10)(6hati-6hatj+2hatk)("or")0.6(hati-hatj+1/3hatk)`
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