[الاء عبدالله]

السلام عليكم و رحمة الله و بركاته

لو سمحتواا اذا ممكن تساعدوني بالمسائل الفزيائيه التاليه
مع شرحها لان عندي اختبار و مو فاهمها كيف احلها

هي عن
motion in a straight line


1- a sandbag is dropped from an ascending balloon that is 300 m above the ground and is ascending at 10 ms^-1
a)what is the maximum height of the sandbag ?
b)find the position and velocity of the sandbag after 5 s
c) how long does it take for the sandbag to reach the ground from the time it was dropped



2- a rock is dropped into a well and splash is heard 3 s later . if sound travels in air at 344 ms^-1 ,how deep is the well


و شكراا جزيلااا

3- a sled starting from rest slides down a hill with uniform acceleration. it travels 12 m in the first 4 s when will the sled have a velocity