المساعد الشخصي الرقمي

مشاهدة النسخة كاملة : مساائل الطاقه .. ارجواا المسااعده؟



طالبه جآمعيه
04-17-2009, 07:30 PM
السلام عليكم ورحمه الله وبركاته..





شخبااركم طيبين وبخير..ممكن تسآعدووني بحل هالمسألتين ؟


#Acar travelling north at30 m/s has amass of 1500 kg . it hits acar of mass and they both come immediately to rest. What was the speed and direction of the other car just befor the collision?


#A 1000 kg car moving at 20 m/s hits a2000 kg parked car head on . How much mechanical energy is disssipated if the collision is _ a)elastic?
b) completely inelastic?