CHALLENGE The airplane in Figure 17 flies at 200.0 km/h relative to the air. What is the velocity of the plane relative to the ground if it flies during the following wind conditions? 1. Tailwind Headwind Figure 17 a. a 50.0-km/h tailwind b. a 50.0-km/h headwind 2. ! A boat is rowed directly upriver at a speed of 2.5 m's relative to the water. Viewers on the shore see that the boat is moving at only 0.5 m's relative to the shore. What is the speed of the river? Is it moving with or against the boat? 3. The compass of an airplane indicates that the airplane is heading north. The airplane is moving at an airspeed of 230 km/h. The wind is blowing east at 55 km/h. Va/g a. What is the speed of the plane with respect to the ground? Vp/a b. How many degrees east of north is the plane's velocity with respect to the ground?Unit 5 Conservation of Momentum 1. A compact car, with mass 725 kg, is moving at 115 km/h toward the east. Sketch the moving car. a. Find the magnitude and direction of its momentum. Draw an arrow on your sketch showing the momentum. b. A second car, with a mass of 2175 kg, has the same momentum. What is its velocity? 2. A 7.0-kg object, moving at 2.0 m/s, receives two impulses (one after the other) along the direction of its motion. Both of these impulses are illustrated in Figure 2. Find the resulting speed and direction of motion of the object after each impulse. Force (N) Time (al Force IN . A 925-kg car moving north at 20.1 m/s collides with a 3. 1865-kg car moving west at 13.4 m/s. After the collision, the two cars are stuck together. In what direction and at what speed do they move after the collision? Define the system as the two cars