MasteringPhysics Assignment 3- Chapter 3-Mozilla Firefox A https://session.maste
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MasteringPhysics Assignment 3- Chapter 3-Mozilla Firefox A https://session.master myct/itemView?assignmentProblemiD 83615445 Conceptual Problem about Projectile Motion Resourca Conceptual Problem about Projectile Motion One is the moment the ball reaches the peak of its trajectory, at time ti with velocity vi. Its position at this moment is denoted by (z1,) or (Vaax) since it is at its maximum height The other point, at time t2 with velocity 2, corresponds to the moment just before the ball stnikes the ground on the way back down. At this time its position is (2,2), also known as Learning Goal: To understand projectile motion by considering horizontal constant velocity motion and vertical constant acceleration motion independently x )since it is at its maximum horizontal range Projectile motion is symmetric about the peak, provided the object lands at the same vertical height fror which is was launched, as is the case here Hence h 0 m Projectile motion refers to the motion of unpowered objects (called projectiles) such as balls or stones moving near the surface of the earth under the Part A Figure 1 of 2 How do the speeds vo, ul , and t-2 (at times to. t1, and t2) compare? peak height O to =v1.trz > o range 2 or R xi Distance Downrange Submit My Answers Siee U initial positionExplanation / Answer
vo = v2 > v1 > 0
the projectile is launched with speed vo . due to acceleration due to gravity along the vertical direction , the projectile slows down as it goes up. hence v1 < vo . as the projectile comes back , it gains speed and by symmetry the speed at lowest point is same as the speed of launch.