1 Multiple Choice 1 point A car travels 150 kilometers west in 3 hours. What is its average velocity? \( 150 \mathrm{~km} / \mathrm{hr} \) \( 50 \mathrm{~km} / \mathrm{hr} \) \( 50 \mathrm{~km} / \mathrm{hr} \) west \( 150 \mathrm{~km} / \mathrm{hr} \) west Multiple Choice 1 point When you know both the speed and direction of an object's motion, you know the seed of the object. acceleration of the object. distance the object has traveled. velocity of the object. Multiple Choice 1 point A roller coaster is moving at \( 10 \mathrm{~m} / \mathrm{s} \) at the top of a hill and \( 22 \mathrm{~m} / \mathrm{s} \) at the bottom of the hill two seconds later. What is the acceleration of the roller coaster? \( .6 \mathrm{~m} / \mathrm{s}^{2} \) \( 6 \mathrm{~m} / \mathrm{s} \) \( 6 \mathrm{~m} / \mathrm{s}^{2} \) \( .167 \mathrm{~m} / \mathrm{s} \) 2
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When the car travels 150 kilometers to the west in 3 hours, its average velocity can be calculated by dividing the distance by time. The result is \( 50 \mathrm{~km} / \mathrm{hr} \) in the westward direction. This westward designation is crucial since velocity includes direction, differentiating it from speed which is just a scalar quantity. Velocity isn't just about how fast something is going; it's essential for understanding real-world movements! In navigation, for instance, knowing both the speed and direction allows pilots and sailors to calculate their journeys accurately, adjusting for factors like wind or current. This kind of information ensures they can arrive right on time at their destinations while taking the most efficient paths!
