25 cm Ball 1 V1 50 cm Ball 1 Ball 2 V2, = 0 02 50 cm V2 Ball 2 50 cm a) what is O, ? 6) what is O,? c) using variables, write an equation for the total momentum of the system in the x-direction. (Balls 12 have a mass of m, $ m,, vespectively.) d) using variables, write an equation for the total momentum of the system in the y-direction.(Balls 1¢2 have a mass of m, $ m, – vespectively.)

What is the momentum of a 1400-kg vehicle with a speed of at 25 m/s? a) 8.75 × 105 kg-m/s b) 3.5 × 104 kg-m/s c) 57 kg-m/s d) 4.38 x 105 kg-m/s

? An object with total mass mtotal = 15 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.8 kg moves up and to the left at an angle of 0, = 24° above the -x axis with a speed of v, = 28.3 m/s. A second piece with mass m, = 5.2 kg moves down and to the right an angle of 02 = 29° to the right of the -y axis at a speed of v2 = 21.5 m/s.

1. Which of the following quantities are units of momentum? ON m O kg s/m O kg m2/s2 N.S none

8.) In this photo, a fire extinguisher provides the impulse for a hallway rocket cart. Which is NOT true about the motion of the rocket cart and person? a.) The cart and person are propelled as a result of gas from the fire extinguisher pushing against air in the room. b.) The force of the gas on the cart and person is equal and opposite to the force of the person and cart on the expelled gas.      c.) The momentum of the cart and person is equal in magnitude and opposite in direction to the momentum of the expelled gas.

18. If car A has a greater momentum than car B, what will happen to both vehicles immediately after they collide? A. They will travel to the right. B. They will travel to the left. C. They will stop immediately. D. It cannot be determined from this information. 19. If both cars are travelling the same speed and car B has a greater mass, what will happen to both vehicles after they collide? A. They will travel to the right. B. They will travel to the left. C. They will stop immediately. D. It cannot be determined from this information.