
Gabarito 1ª lista de exercícios
1. (a) 8,05 km; (b) 473 cm3; (c) pessoal
2. (a) 109 ; (b) 104 m; (c) 9,15 x 105 m
3. (a)0,18 pts2
4. 1,19 x1021 pingos
5. (a) correta; (b) Errada; (c) Correta.
6. (a) 1,43x10-6 m3; (b) 7,24x104 m.
7. (a) 320 varas; (b) 80 cadeia.
8. 82,12 m
9. (a) 1,43; (b) 1,15
10. 1.743,24 kg
11. (a) 11,75 m; (b) 4,27 m; (c) 47,16 m; (d) -58°.
12. (a) 5,2 j; (b) 3,2 km; (c) 42°.
13. (a) 8i+2j; (b) 8,24; (c) 14°; (d) 2i – 6j; (e) 6,32; (f) -71,5°.
14. (a)14i-10j+12k; (b) 18i-14j-4k; (c) 38i-26j; (d) 31 k; (e) 8 m; (f) 17 m; (g) -31k.
15. 2,8 km e 62°
16. (a) -18,84; (b) 26,90
17. 22,1°
18. (a) 5,3 m; (b) -1i +5j; (c) -78,6°.
19. (a) 370 m; (b) 36° norte-leste; (c) 425 m; (d) a distância da caminhada.
20. (a) 4,2 m; (b) 50°; (c) 8,0 e -4,5°
21. 12 minutos, portanto, não se atrasa.
22. (a) 3,75 m/s; (b) 1,19 m/s.
23. 50 km
24. (a) 1,5 m/s; (b) 0, 50 m/s; 100 m/s e 200 m/s.
25. 1,36 g o guepardo e 0,6 o carro.
26. (a) -514 m/s2; FALTA O ITEM (b)
27. (a) 0,65 s; (b) 12 m; (c) 8,41 m; (d) 9,53 m/s e 18,6 m/s; (e) -9,10 m/s.
28. (a) 10 s; (b) 250 m
29. 3h30mim
30. 1200 m, logo os trens colidem.
31. (a) vo + ½ A(t-t0); (b) A(t-t0); (c) gráficos.
32. (a) v = 11,76 -9,8t; y= 1,5 + 11,76t-4,9t2; (b) gráfico.
33. (a) 0,86 g; (b) 3,46 s.
34. 250 km
35. (a) 1,66 m/s2; (b) 12 s; (c) 240 m.
36. (a) 82 m; (b) 19 m/s.
37. 34 m.
38. 22 m/s.
39. (a) -30,6 m; (b) 24,5 m/s
40. 182,53 m/s.
41. 3,61 km e 74°.
42. (a) 0,167i-1,08j; (b) -33°; (c) v = 1/6 i – 1080/t2 j; t = 60 s v = 1/6 i – 0,3 j
43. 179 km/h
44. (a) -9,8 j; (b) -12i +12j.
45. (a) 3 s; (b) 58,8 m.
46. (a) 6,30 s; (b) 126 m; (c) 194,5 acima da balsa; (d) 1,53 s.