Quiz 1
1) a,b,c,d
3) (a) B; (b) A B
4) 170 km
Quiz 2
1) (a) about 3.5s, (b) NONE
2) 1.2 x 10^6 m/s
3) -144 m/s^2
4) 69 m
Quiz 3
1) ax = 17 ; ay
= -36 all in m/s^2
2) cx = 7.7 ; cy
= 5.7; c = 9.6; 37 degrees above +x axis
3) 203 m/s; 811 m
Quiz 4
1) 0.85
2) If we define +x to be to the right and +y to be up:
F = -106N i + 100N j
Quiz 5
1) -170 N
2) 23 J
3) 3.3 cm
Quiz 6
1) (a) 4.0 m/s; (b) 3.6 m/s
2) Pa = Pb; Emb = Emc
Quiz 7
1) If we define +x to be in the original direction of the ball
and +y to be up:
(a) Jx = -2.1 kg m/s and Jy = 1.6 kg m/s
(b) 41 m/s
2) 2.5 m/s
Quiz 8
1) 4.0 m
2) (a) 1.3 m to the right of the 10 kg mass; (b) 27 kg m^2; (c)
644; (d) 90 m/s