Question

v^2=u^2+2as. a=5, s=8.4, v=10 then find u=?​

Answer 1

Answer:

u = 4

Explanation:

v² = u² + 2as

10² = u² + 2 x 5 x 8.4

100 = u² + 84

u² = 16

u = 4

Answer 2

Answer:

The value of $u = 4m/s.$

Explanation:

• Given,

$v = 10m/s ,a = 5m/s^{2} , s=8.4m, u =?$

     $v^{2} = u^{2} +2as$

Subsitute the given values in above equation,

$(10)^{2} = u^{2} + 2*5*8.4$

$100 = u^{2} + 84$

$100-84 = u^{2}$

$u^{2} = 16$

$u = 4m/s$

Therefore, the value of  $u = 4m/s.$

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