Exercicio De Fisica

EXERCICIO DE FICA 1 PROFESSOR - ALDO

LUIS FELIPE MOTA DOS SANTOS CPD: 032655

PERGUNTAS

Questão (1)

um automóvel viaja em uma estrada retinelar por 40 km a e 30 km/h. Em seguida, continuando no mesmo sentido, percorre outros 40 km a 60 km/h. (a) Qual e a velocidade media do carro durante este percurso de80 km? (Suponha que o carro se move no sentido positivo de x.) (b) Qual e a velocidade escalar media? (c) Trace o gráfico de x em função de t e mostre como calcular a velocidade media a partir do gráfico.

(a)________________________________________________________________________________________________________________________________________________________

(b)______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

(c)________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Questão (5)

A posição de um objeto que se move ao longo de um eixo x.: dada par x =3t - 4rc + t'. onde x esta em metros e sem segundos.Determine a posição do objeto para os seguintes valores de t: (a)1s(b) 2 s. (c) 3 s. (d) 4 s. (e) Qual e o deslocamento do objeto entre = 0 e r = 4 s? (f) Qual e a velocidade media para 0 intervalo de tempo de t = 2s a t = 4 s? (g) faça gráfico de x em função de: para O:s t:S 4 s e indique como a resposta do item (f) pode ser determinada a partir do gráfico.

(a)___________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________

(b)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

(c)_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________-

(d)__________________________________(f)___________________________________________________________________________|____________________________________________________________________________|____________________________________________________________________________|____________________________________________________________________________|________________________________________ ____________________________________|________________________________________ (e)__________________________________|____________________________________________________________________________|____________________________________________________________________________|______________________________________

(g)________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________