![]() ![]() One more thing, I am going to write the air resistance as Kv 2 just because it is shorter. But, how do the vertical air resistances compare? Let me call the initial launch speed of the bullet v bullet. So, they both initially had the same vertical acceleration and after a short time about the same velocity (I will call this v 2y). The fired bullet was moving horizontally so that the air resistance was only in the x-direction. When initially released, both bullets had the same force in the y-direction. So, is this right? Should the dropped bullet really hit the ground first with air resistance? Let me draw two force diagrams for a dropped bullet and a fired bullet just a short moment after they are released. This is with a ginourmous drag coefficient of C = 20. What if I increase the air resistance? I could redo this with something like a baseball, but I will just increase the coefficient C. The above graph looks like just two lines because the dropped bullet and the no drag bullet are so similar. The no air drag object will hit first, then the dropped bullet and then the fired bullet. Actually, all three objects will hit differently. Also, I will add a plot of a falling bullet without air resistance. Ok, now to add air resistance to the dropped bullet and just drop it (don't shoot it). The bullet without air resistance hit the ground after 0.431 seconds. Here you can see that the bullet with air resistance hit the ground after 0.44 seconds. ![]() We have made sure that all the levels can be cleared in their time limit, but if you find the time limitation too hard, check the original Physics Drop app by IDC Games, where you can take all the time you want to solve the puzzles.I zoomed in to just the end. If you need more time to complete a physics problem, you can use the Timex2 button.Ī free educational game with 100 physics puzzles to clear, Physics Drop Countdown provides hours of fun.ĭownload Physics Drop Countdown now and take the new brain challenge! A countdown timer will feature the available time to complete each physics problem. Time limits can range from 5 and 18 seconds to 2 minutes. ![]() Time limits have been carefully calculated to be challenging taking into account each level's difficulty. All the physics problems have a limited time to be solved. Beware not to trap the ball inside a group of lines. Both the ball and the lines react to the law of gravity. Draw as many lines or polygons as needed. but be quick or you won't level up to the next physics challenge! You have less than 2 minutes to find the formula to get the ball into the U basket. Push the ball into the U by drawing lines and polygons. After 15 million downloads at Google Play, the creators of Physics Drop now launch Physics Drop Countdown, with all the features you love from the original game plus a brand new time limit feature. ![]()
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