L4 ACT科学-- 物理课件.pptxVIP

ACT Science 物理背景;Overview;运动;friction n.摩擦力 frictionless adj.无摩擦力的 stationary adj.静止的 gravity n.重力 bounce v.弹跳 ramp n.斜坡 incline n.斜坡 pendulum n.钟摆;21.If a block was pulled toward the east, the frictional force exerted on the block by the surface was directed toward the: (72C,2014) north. south. east. west.;21.If a block was pulled toward the east, the frictional force exerted on the block by the surface was directed toward the: (72C,2014) north. south. east. west.;acceleration n. 加速度;acceleration n. 加速度;23. Based on Figure 2, what was the approximate value of the acceleration of the 3.00 kg block? (72C,2014) 0.0 m/sec2 5.0 m/sec2 15.0 m/sec2 20.0 m/sec2;23. Based on Figure 2, what was the approximate value of the acceleration of the 3.00 kg block? (72C,2014) 0.0 m/sec2 5.0 m/sec2 15.0 m/sec2 20.0 m/sec2;acceleration n. 加速度;24. Based on Figure 1, the results of Experiment 1 are best modeled by which of the following equations? ;24. Based on Figure 1, the results of Experiment 1 are best modeled by which of the following equations? ;26. Based on Figure 1, an applied force of 30.00 N would most likely have been required to maintain the constant speed of a block having a mass of: F. 4.00 kg. G. 5.00 kg. H. 6.00 kg. J. 7.00 kg. ;26. Based on Figure 1, an applied force of 30.00 N would most likely have been required to maintain the constant speed of a block having a mass of: F. 4.00 kg. G. 5.00 kg. H. 6.00 kg. J. 7.00 kg. ; 1. Consider two of the riders temporarily renamed Rider A and Rider B. Rider A traveled in the same direction as Rider B throughout the 35 sec interval. Initially, Rider A traveled more slowly than Rider B and fell behind. But Rider A pedaled faster and faster and, in less than 30 sec, caught up with and passed Rider B. Who were Riders A and B? (69A, 2010);Initially, Rider A traveled more slowly than Rider B and fell behind. But Rider