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[题1](河南省)洒水车沿街道匀速行驶,将水洒向路面.在此过程中它的动能将__,这是因为__。[目的]考查是否理解动能的概念.[分析]动能是运动的物体所具有的能量,动能的大小跟物体的速度和质量的大小有关.洒水车在沿街道匀速行驶将水洒向路面的过程中,它的动能将减小(第一空答案),这是因为洒水车的速度虽然不变.但它的质量在逐渐减小
[Question 1] (Henan Province) The sprinkler travels along the street at a constant speed, spraying water on the road surface. During this process, its kinetic energy will be __, which is because of __. [Objective] To examine whether or not to understand the concept of kinetic energy. [Analysis] Kinetic energy is the energy of a moving object. The magnitude of kinetic energy is related to the speed and quality of the object. The process of sprinkling water at a constant speed along the street to sprinkle water on the road surface In the middle, its kinetic energy will be reduced (the first empty answer) because the speed of the sprinkler remains the same, but its quality gradually decreases.