Question

en la figura 2.18 se presenta una grafica de posicion versus tiempo para un objeto en movimiento rectilineo. A) ¿cuales son las velocidades promedio para los segmentos AB,BC,CD,DE,EF,FG y BG

Answer 1

Respuesta:

Las respuestas bajo las fórmulas son:

Explicación:

AB: Vm = xf - xi = 1m – 1m = 0m | t = t2 – t1 = 1s – 0s = 1s | 0m/s

BC: Vm = xf - xi = 7m – 1m = 6m | t = t2 – t1 = 3s – 1s = 2s | 6m/2s = 3m/s

CD: Vm = xf - xi = 9m – 7m = 2m | t = t2 – t1 = 4.5s – 3s = 1.5s | 2m/1.5s = 1.33m/s

DE: Vm = xf - xi = 7m – 9m = -2m | t = t2 – t1 = 6s – 4.5s= 1.5s | -2m/1.5s = -1.33m/s

EF: Vm = xf - xi = 2m – 7m = -5m | t = t2 – t1 = 9s – 6s = 3s | -5m/3s = -1.67m/s

FG: Vm = xf - xi = 2m – 2m = 0 | t = t2 – t1 = 11s – 9s = 2s | 0m/2s = 0m/s

BG: Vm = xf - xi = 2m – 1m = 1m | t = t2 – t1 = 11s – 1s = 10s | 1m/10s = 0.1m/s  

BG: Rm = Δx = 0m + 6m + 2m + 2m + 5m + 0m = 15m | t = t2 – t1 = 11s – 1s = 10s = 15m/10s = 1.5m/s