[mahmoud khodary]

من قوانين الحركة نجد ان

x = FV* t - 0.5 * a* t^2

where x = displacement
FV = final velocity
a = acceleration
t = time
a = 2 m/s^2 t = 4 sec FV = 0

x = 0 - 0.5 *2 * 16

x = 16 m
تحياتى