سؤال في phys 110 شاك فيه !!

[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



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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