Atps Fisica

Daniela

Passo 1

1m= 3,28084 pés

1000x 3,28084

1km= 3280,84 ↔ 300x 3280,84 = 9,8 pés

Passo 2

1milha= 1,853m

100÷1,853= 53,96 milhas naúticas

Passo 4

VmI = (s/(t ↔ 300 = 50/(t

(t= 50/300 = 0,1666666h

VmII= (s/(t ↔ 400 = 50/(t

(t= 50/400= 0,125h

(t= (tI+(tII

(t=0,1666666666h+0,125h

V = (s/(t↔ 100/0,29166

Vm= 342,85Km/h

Etapa2

Passo 1

Vm = (s/(t ↔ 400Km=100Km/(t

(t=100/400

(t=0,25h x 3600

(t= 900s

Passo 1

helicóptero

Vm = (s/(t ↔ 200Km=100Km/(t

(t=100/200

(t=0,5h x 3600

(t= 1800s

Passo 2.

|a)Alcântara – ponto de impacto |338 km |

|b)Parnaíba – ponto de impacto |100 km |

|c)São José dos Campos – ponto de impacto |3000 km |

Resposta

A)

Vm = (s/(t ↔ 300.000Km/s = 338Km/(t

(t=338/300,000

t=1,12 mili s

B)

Vm = (s/(t ↔ 300.000Km/s = 100Km/(t

(t=100/300,000

t=333,33 micro s

C)

Vm = (s/(t ↔ 300.000Km/s = 3000Km/(t

(t=3000/300,000

t=0,01s

Passo 3

1 Mach = 1225 km/h = 1225 . 9 x = 11025 km/h

Vm = (s÷(t

11025=300÷(t

(t=300÷11025

T=0,0027h

S = S0 + V0.T + 1/2A(T)2 300 = 0+ 0(0,027210884) + ½ a(0,027)2

300 = 0,729. 10-3a

2

a