Two spherical balls having equal masses with radius of $5cm$ each are thrown upwards along the same vertical direction at an interval of $3s$ with the same initial velocity of $35m{s}^{- 1}$ , then these balls collide at a height of _____ $m$ ,
(take $g = 10m{s}^{- 2}$ )

Question

Two spherical balls having equal masses with radius of $5cm$ each are thrown upwards along the same vertical direction at an interval of $3s$ with the same initial velocity of $35m{s}^{- 1}$ , then these balls collide at a height of _____ $m$ ,

(take $g = 10m{s}^{- 2}$ )

Quantrex Academy · Accepted Answer

Correct answer: 0

S _ 1 = S _ 2 35t + (1)/(2) ( - g ) t ^ 2 = 35 ( t - 3 ) + (1)/(2) ( - g ) ( t - 3 ) ^ 2 35t - (1)/(2)g t ^ 2 = 35t - 35 × 3 - (1)/(2)g ( t ^ 2 - 6t + 9) (35 × 3) + 45 = 30t t = (150)/(30) = 5 heighth = 35 × 5 - (1)/(2) × 10 × 5 ^ 2 h = 175 - 125 = 50m

Two spherical balls having equal masses with radius of 5cm each are...

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