Two asteroids collide and stick together. The first asteroid has mass of 1.38x104 kg and is initially moving at 650 m/s. The second asteroid has mass of 1.70x10* kg and is moving at 1130 m/s. Their initial velocities made an angle of 18° with respect to each other. What is the final speed and direction with respect to the velocity of the first asteroid?

The following two questions relate to a baseball being hit. Just before the ball (of mass 0.4kg) contacts the bat, it is travelling in the negative x direction with a speed of 20m/s. Immediately after the hit, the ball moves away from the bat in the positive x direction with a speed of 30 m/s. The bat is in contact with the ball for 10 milli-seconds. 10. What is the magnitude of the average force on the ball in the x direction, while it is in contact with the bat? A) 400 N B) 1200 N C) 1600 N D) 2000 N E) 100,000 N 11. While in contact with the bat, there is an instant when the ball is stationary. At that instant, describe the acceleration of the ball in the x direction: A) In the positive x direction and non-zero B) In the negative x direction and non-zero C) Zero

→ A student runs an experiment with two carts on a low-friction track. As measured in the Earth reference frame, cart 1 (m 0.36 kg) moves from left to right at 1.0 m/s as the student walks along next to it at the same velocity. (a) What velocity v E2,¡ in the Earth reference frame must cart 2 (m 0.12 kg) have before the collision if, in the student's reference frame, cart 2 comes to rest right after the collision and cart 1 reverses direction and travels from right to left at 0.33 m/s? (b) What does the student measure for the momentum of the two-cart system? (c) What does a person standing in the Earth reference frame measure for the momentum of each cart before the collision? .. =

Three asteroids coated with cosmic slime are moving in the same plane when they collide and stick together. Initially, asteroid A has a mass of 2*107 kg and is moving to the right at a speed of 150 m/s, asteroid B has a mass of 3*107 kg and is moving at 50 m/s towards the lower left at an angle of 60 degrees with respect to asteroid A, while asteroid C has a mass of 5*107 kg and is moving with an unknown speed and angle. After the collision, the resulting single asteroid is moving toward the right at a speed of 50 m/s. Determine the speed and angle of asteroid C prior to the collision.