[بنت جامعه]

بليز ساعدوني مطلوب هالواجب يوم الاربعاء وانا ماعرفت احلة:mommy_cut:

A 0.21kg pine cone falls 14m to the ground where t lands
with a speed of 13m/s

a)with what speed would the pine cone have landed if ther had been no air resistance
b)did air resistance do positive work, negative work, or zero work on the on the pine cone?explain.[/LEFT]
ويعطيكم الف عافيه يارب