1.

Two balls are thrown upward with velocities 20m/s and 30m/s. What is the ratio of their displacements in last second of their upward motion?​

Answer»

Answer:

DISPLACEMENT during LAST 1s downward journey = displacement during FIRST 1s of upward journey

hence REQUIRED ratio = 1:1

s=1/2gt²

=5m when g=10m/s²



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