1.  4.87 km @ 209° from E; 23.3 m/s; 13.5 m/s @ 209°, solution
3.  (18.0 t) i + (4.00 t - 4.90 t^2) j; (18.0) i + (4.00 - 9.80 t) j;  -9.80 j;
    (54.0 i - 32.1 j) m;  (18.0 i -25.4 j) m/s;  (-9.80 j) m/s^2, solution
5.  (2.00 i + 3.00 j) m/s^2;  (3.00 t + t^2) i m,  (1.50 t^2 - 2.00 t) j m, solution
7.  (0.800 i - 0.300 j) m/s^2;  339°;  (360 i - 72.7 j) m, -15.2°, solution
9.  3.34 i m/s; -50.9°, solution
11.  20°;  3.05 s, solution
14.  0.600 m/s^2, solution
15.  53.1°, solution
16.  22.6 m; 52.3 m; 1.18 s, solution
19.  it clears by 0.889 m;  while descending, solution
21.  d*tan(theta) - (g*d^2)/(2vi^2*cos^2(theta)), solution
25.  377 m/s^2, solution
27.  10.47 m/s; 219 m/s^2, solution
28.  0.186 rev/sec, solution
31.  1.48 m/s @ 29.9° behind the radius, solution
33.  13.0 m/s^2; 5.70 m/s; 7.5 m/s^2, solution
35.  see back of book; 29.7 m/s^2; 6.67 m/s @ 36.9° above horizontal, solution
36.  26.9 m/s; 67.3 m; (2i - 5j) m/s^2, solution
37.  2.02 E 3 sec; 21.0% longer, solution
38.  18.0 s, solution
40.  Alan takes longer than Beth (see proof), solution
43.  15.3 m, solution
61.  46.5 m/s;  -77.6°;   6.34 s, solution
65.  20.0 m/s, 5.00 s;  (16.0 i - 27.1 j) m/s;  6.54 s;  (24.6 i) m, solution
67.  43.2 m;  (9.66 i - 25.5 j) m/s, solution

Problem Day Problems:
#1  0.425 s, 0.425 s, 82.7 ft, 4.79°, 193 MPH, solution
#2  6.325 m/s, 1.063 m below roof, 1.344 m/s up, 0.092 m yes, 9.00 m/s @ -45.4°, solution
#3  2.00 m/s^2, 3.464 m/s^2, 4.00 m/s^2, 6.59 s, solution
#4  23.96°, 26.33°, 3.94 min, 21.94°, solution