a player takes 0.1 s in catching a ball of mass 150g moving with a velocity of 30 m/s.the force by the ball on the hands of the player is
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a player takes 0.1 s in catching a ball of mass 150g moving with a velocity of 30 m/s.the force by the ball on the hands of the player is
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Imaginary Numbers
i = imaginary unit
i² = -1 or i = √-1
i⁰ = 1
i¹ = i
i² = -1
i³ = -i
i⁴ = 1
i⁵ = i
i⁶ = -1
i⁷ = -i
to raise i to an arbitrary higher power:
= i¹⁰⁰
= (i⁴)²⁵
= 1²⁵
= 1
= i⁵⁰¹
= i⁵⁰⁰ * i¹
= (i⁴)¹²⁵ ⋅ i¹
= i
√-9 = i√9 = 3i
(3i)² = 3² ⋅i² = 9 ⋅ -1 = -9
3i = √-9