The mass of a particular eagle is twice that of a hunted pigeon. Suppose the pigeon is flying north at vi2 = 16.1 m/s when the eagle swoops down, grabs the pigeon, and flies off. At the instant right before the attack, the eagle is flying toward the pigeon at an angle 0 = 49.5° below the horizontal and a speed of vi,1 = 33.3 m/s. What is the speed of the eagle immediately after it catches its prey? Vi.2 speed: m/s What is the magnitude of the angle, measured from horizontal, at which the eagle is flying immediately after the strike? magnitude of angle:

In the figure m1 = 0.400 kg and m2 = 0.100 kg. The system is released from rest and m1 travels through a distance s = 1.00 m. What is the elapsed time? m, m2 O 505 ms O 1010 ms O 714 ms O 904 ms

= 1. Sphere A has mass ma = 0.05 kg, velocity magnitude va = 2.0 m/s making an angle 30° with the + axis. Sphere B has mass m₁ = 0.03 kg, velocity magnitude Vb = 3.0 m/s and moves along the +y axis. Sphere C has mass mc 0.04 kg, velocity magnitude vc = 4.0 m/s and moves along the +x axis. See figure. They are all approaching the origin as they slide on a frictionless surface. The three spheres arrive at the origin at the same time and stick together. (a) What is the final velocity of the combined object? (b) How does the final kinetic energy compare to the kinetic energy before the collision? y m a m mb X

A spaceship has a mass of 600 kg at rest and accelerates to high speed. A person at rest on the ground observes that the spaceship has 1000 kg. How fast (in x 108 m/s) is the spaceship?