Consulte Graatis
Find a Question:
Física">
Física posições e velocidade ????
Um móvel orienta-se de acordo com a funcao de posição s=40+4t-2t2
A)posição e velocidade inicial e a aceleração
B)a posição após 4 segundos
2)um automóvel a 72km/h acel. N n n. eração escalar constante de modulo 5m/s2 .calcule a distancia que ele percorre
![](http://www.professoronline.net/wp-content/uploads/2012/02/professores_online.jpg)
Answer #
Ainda tem duvida sobre Física posições e velocidade ????, entao utilize o campo de respostas dessa mesma pergunta para contra argumentar novas explicacoes.Answer this Question
You must be Logged In to post an Answer.
Not a member yet? Sign Up Now »
Star Points Scale
Earn points for Asking and Answering Questions!
![Grey Sta Levelr](https://www.professoronline.net/wp-content/themes/instant-qa/images/grey-star-big.png)
![Grey Star Level](https://www.professoronline.net/wp-content/themes/instant-qa/images/grey-star-points-icon.png)
![Green Star Level](https://www.professoronline.net/wp-content/themes/instant-qa/images/green-star-big.png)
![Green Star Level](https://www.professoronline.net/wp-content/themes/instant-qa/images/green-star-points-icon.png)
![Blue Star Level](https://www.professoronline.net/wp-content/themes/instant-qa/images/blue-star-big.png)
![Blue Star Level](https://www.professoronline.net/wp-content/themes/instant-qa/images/blue-star-points-icon.png)
![Orange Star Level](https://www.professoronline.net/wp-content/themes/instant-qa/images/orange-star-big.png)
![Orange Star Level](https://www.professoronline.net/wp-content/themes/instant-qa/images/orange-star-points-icon.png)
![Red Star Level](https://www.professoronline.net/wp-content/themes/instant-qa/images/red-star-big.png)
![Red Star Level](https://www.professoronline.net/wp-content/themes/instant-qa/images/red-star-points-icon.png)
![Black Star Level](https://www.professoronline.net/wp-content/themes/instant-qa/images/black-star-big.png)
![Black Star Level](https://www.professoronline.net/wp-content/themes/instant-qa/images/black-star-points-icon.png)
Answer #1
s(t)=40+4t-2t^2
A) s(t) = s0+v0t+at^2/2
s0 = 40
a/2= -2 a = -4
B) S(4) = ?
S(4) = 40+4(4)-2(4^2)
S(4) = 24
2) A questão não está clara, falta informações.