1.

Ball is thrown upward with speed 10m/s from top of tower reaches ground with speed 20m/s . Height of tower is

Answer»

ANSWER:

THIRD EQUATION of MOTION..

2as=Vf^2-Vi^2

Explanation:

2(9.8)S=20^2-10^2

19.6(H)=400-100

19.6h=300

h=300/19.6

h=15.30m



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