KVPY2011PhysicsMotion in One Dimension
A juggler tosses a ball up in the air with initial speed u . At the instant it reaches its maximum height H , he tosses up a second ball with the same initial speed. The two balls will collide at a height
Options
- AH 4
- BH 2
- C3 H 4
- D3 4 H
Correct answer
C. 3 H 4
Step-by-step solution
H - h = 1 2 gt ² ~h = ut - 1 2 gt ² H = ut ...(1) u ² 2 ~g = H ...(2) t = u 2 ~g ( from (1) and (2)) h = u u 2 ~g - 1 2 ~g u ² 4 ~g ² = 3 u ² 8 ~g = 3 H 4