A a certain instant of time a ballon is moving downwards with speed of 5m/s. It has a constant retardation of `5m//s^(2)`. A man in the ballon drops a

A a certain instant of time a ballon is moving downwards with speed of 5m/s. It has a constant retardation of `5m//s^(2)`. A man in the ballon drops a stone at that instant. It hits the ground after 2s. Then the speed with which the stone hits the ground is.
A. 15m/s
B. 25m/s
C. 55m/s
D. 35m/s

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

`vecv=vecu+vecat`
`=4(-hatj)+g(-hatj)xx2`
`=25(-hatj)`

5 views Answered 2023-02-05 15:29

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