PRACTICE IT Use the worked example above to help you solve this problem. The boat in the figure is heading due north as it crosses a wide river with a velocity of 15.0 km/h relative to the water. The river has a uniform velocity of 4.90 km/h due east. Determine the velocity of the boat with respect to an observer on the riverbank. km/h | • east of north magnitude direction EXERCISE HINTS: GETTING STARTED I I'M STUCK! Suppose the river is flowing east at 3.10 m/s and the boat is traveling south at 4.50 m/s with respect to the river. Find the speed and direction of the boat relative to Earth. m/s • south of east speed direction

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Projectile Motion