PHYSICS 1-Time to Hit Ground Physics Problems- Grossmont College .

Name Rifle Shots-Time to Hit Ground 46 The eight figures below show rifles that are being fired horizontally, i.c., straight out, off platforms. The bullets fired from the rifles are all identical, but the rifles propel the bullets at different speeds. The specific speed of each bullet and the height of each platform is given. All of the bullets miss the targets and hit the ground. Rank these bullets, from longest to shortest, on the basis of how long it takes a bullet to hit the ground. That is, put first the bullet that will take the longest time from being fired to hitting the ground, and put last the bullet that will take the shortest time. Scratch Work: 5 m/s 8 m/s 8 m/s 12 m/s 1 30 m 40 m 40’m 20’m A D B С 5 m/s 12 m/s 10 m/s 8 m/s 20 m 20’m 30 m 30 m E F G н Shortest Longest 1 2 3 4 5 6 7 8 Or, all of the bullets reach ground at the same time. Please carefully explain your reasoning and/or the equation you used for your answers. How sure were you of your ranking? (Type answer below) Basically Guessed Sure 1 2 3 4 5 6 7 8 Very Sure 9 10 46 D. Maloney Physics Ranking Tasks 49 Mechanics