A bottle dropped from a balloon reaches the ground in 20s. Determine the height of the balloon (i) if it was at rest in air? (ii)if it was ascending with a speed 50 m/s when dropped?
Asked by | 21st Aug, 2012, 12:09: AM
Expert Answer:
(i) u=0
t=20 s
h=ut+1/2 g t2
=0+1/2 x 10x20x20
=2000m
(ii)u=-50
t=20
h=ut+1/2 g t2
=(-50)x20+1/2 x10x20x20
=1000m
Answered by | 29th Aug, 2012, 01:02: PM
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