سؤال في phys 110 شاك فيه !!

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المشاركة الأصلية كتبت بواسطة دايخ200 طيب ساعدوني في دي السؤالين .. An object moves horizontally with a constant acceleration. At time t = 0 s, the object is at x =m . What are the initial velocity and acceleration of the object at x = −1.5 m at time t = 3 s a) v0 = +2 m/s, a = +2 m/s b) v0 = −2 m/s, a = +2 m/s c) v0 = +2 m/s, a = −2 m/s d) v0 = 1 m/s, a = −1 m/s .................................................. .................................................. ............................................ An object dropped from the window of a tall building hits the ground in 12s. The height of the window above the ground is a) 29.4 m b) 58..8 m c) 118 m d) 706 m

في السؤال الاول كم قيمة x عند t=0 ، ماينحل السؤال بدونها !


السؤال الثاني :

x = v0t + 1/2at^2
v0= 0m/s
t=12 s
a= -9.8

x = 1/2 (-9.8) 144 = 705.6
الخيار d

:)