10/28/10
Post date: Oct 28, 2010 1:44:15 PM
Bell Ringer: Bell Ringer: A giant ball of garbage (m = 84,300 kg) is moving toward Mars at 26,500 m/sec at 0 degrees. Chuck Norris (whose favorite planet is Mars) roundhouse kicks a bus with a bomb at the ball at 3,650,000 m/sec at 245 degrees. The bus has a mass of 1850 kg and sticks to the ball after they collide. What is their final velocity?
Rocket work time
Review problem work time
Chapter 9 test tomorrow
Review answers:
1) 351 kg*m/s
2) 4.8 kg*m/s
3) 42 m/s
4)a) 60.0 N*s
b) 20.0 m/s
5)a) 2.04 x 10^4 N*s
b) 300 N
6)a) 2.35 x 10^4 kg*m/s
b) 2.6 x 10^4 N
10) 1300 sec
16)a) 7.8 x 10^2 kg*m/s
b) -7.8 x 10^2 kg*m/s
c) 7.8 x 10^2 kg*m/s
d) -7.8 x 10^2 kg*m/s
e) 6.1 m/s
17)a) 1.0 x 10^-3 kg*m/s
b) -6.0 x 10^-4 kg*m/s
c) 6.0 x 10^-4 kg*m/s
d) 1.6 x 10^-3 kg*m/s
e) 0.16 m/s or 16 cm/s
21) 10.6 m/s
31 170 kg