[حاتم المالكي]

السلام عليكم

عندي بعض الاسئلة ياليت انكم تشرحونها بالتفصيل وجزاكم الله الف خير

1- ( A sandbag dropped from a balloon strikes the ground in 15 s . what was the height of the ballon if it was initially (a
at rest in the air (b ) descending with a velocity of 20 m /s