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From a building two balls  to  are thrown such that  is thrown upwards and  downwards (both vertically). If  and  are their respective velocities on reaching the ground, then

a)

b)

c)

d)

Their velocities depends on their masses



Question ID - 50940 | SaraNextGen Top Answer

From a building two balls  to  are thrown such that  is thrown upwards and  downwards (both vertically). If  and  are their respective velocities on reaching the ground, then

a)

b)

c)

d)

Their velocities depends on their masses

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

From conservation of energy,

Potential energy at height  kinetic energy at ground

Therefore, at height , potential energy of ball

PE =

KE at ground

So, 

Similarly, 

Therefore,

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