Two balls of equal masses are thrown upwards along the same vertical d

1.	Two balls of equal masses are thrown upwards along the same vertical direction at an interval of 2 second ,with same initial velocity of 45 m/s then find at what height balls will collide
Answer» t1= 45/10=4.5sec t2=2.5 at instant of 4.5 sec 1st ball lis at Hmax = and SECOND ball is at 81.25m so now the DISTANCE bw them is 60m and they are under GRAVITY so grelative= v at that instant =U-gt=45-25=20m/s h(distance between BALLS)= u(ball b with respect to ball a)t 60=(ub+ua)t 60=(20+0)+t t=3sec H=1/2g3² H= 45 m

Two balls of equal masses are thrown upwards along the same vertical direction at an interval of 2 second ,with same initial velocity of 45 m/s then find at what height balls will collide

Answer»

t1= 45/10=4.5sec t2=2.5

at instant of 4.5 sec 1st ball lis at Hmax =

and SECOND ball is at

81.25m

so now the DISTANCE bw them is 60m

and they are under GRAVITY so

grelative=

v at that instant =U-gt=45-25=20m/s

h(distance between BALLS)= u(ball b with respect to ball a)*t

60=(ub+ua)*t

60=(20+0)+t

t=3sec

H=1/2g3²

H= 45 m

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Two balls of equal masses are thrown upwards along the same vertical direction at an interval of 2 second ,with same initial velocity of 45 m/s then find at what height balls will collide

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