Initial state: = 0 = 0 = +12.5 m.s-1 = 9.81 m.s-2 t s u g Final state when = 1.23 s: = ? m = ? m t s v Eq(1) Eq(2) Final state when = -40.0 m (as ball strikes ground): = ? s v = ? s t Eq(3) Eq(1) When the ball is thrown upwards it will slows down as it rises, stops, reverse direction and then falls. At the instant when the ball reaches its maximum height its velocity is zero (the acceleration of the ball is still = -g =-9.81 m.s-2). a Initial state: = 0 = 0 = +12.5 m.s-1 = -g = 9.81 m.s-2 t s u a Final state when = 0: = ? s = ? m v t s Eq(1)
Initial state: t = 0 s = 0 u = +12.5 m.s-1 g = 9.81 m.s-2 Final state when t = 1.23 s: s = ? m v = ? m Eq(1) Eq(2) Final state when s = -40.0 m (as ball strikes ground): v = ? t = ? s Eq(3) Eq(1) When the ball is thrown upwards it will slows down as it rises, stops, reverse direction and then falls. At the instant when the ball reaches its maximum height its velocity is zero (the acceleration of the ball is still a = -g =-9.81 m.s-2). Initial state: t = 0 s = 0 u = +12.5 m.s-1 a = -g = 9.81 m.s-2 Final state when v = 0: t = ? s s = ? m Eq(1)