If you drop a bowling ball and a soccer ball from the same height at the same time, which one lands first? Or do they land at the same time?
SHORT ANSWER: If there’s no air resistance, they land at the same time. If there is air resistance, the bowling ball lands first.TL;DR ANSWER: If you do this in a vacuum chamber, where there is no air resistance, they land at the same time.This seems counter-intuitive; after all, the bowling ball is more massive, so shouldn’t gravity pull harder on the bowling ball than it does on the soccer ball?And yes, gravity does pull harder on the bowling ball; however, the bowling ball’s extra mass means it has more inertia - greater resistance to acceleration - than the soccer ball. In the case of gravity pulling two objects from the same height, the extra pull of gravity on the bowling ball is balanced by the extra inertia, and the objects accelerate at the same rate.When we introduce air resistance, the situation becomes more complicated. Both the bowling ball and the soccer ball experience air resistance, because they must push air molecules out of the way as they fall. The amount of air resistance (or drag) experienced by a falling object depends on the square of its velocity, the density of the air, the size of the object, and a hard-to-measure quantity known as the coefficient of drag. If we assume that all of these variables are the same for the bowling ball and the soccer ball, then the bowling ball and the soccer ball experience the same amount of drag.So while weight is dependent on the balls’ mass, drag is not. Let’s say the bowling ball has a mass of 5.5 kg (about 12 pounds). Its metric weight is about 54 newtons. A soccer ball has a mass of 0.43 kilograms (just under 1 pound). The metric weight of a soccer ball is about 4 newtons.Let’s suppose that each ball experiences 1 newton of drag at a certain speed. The net force acting on the bowling ball is still 53 newtons, but the net force acting on the soccer ball is only 3 newtons. From Newton’s 2nd law, the bowling ball’s acceleration comes out at about 9.6 m/s², but the soccer ball’s acceleration is only 7.0 m/s².So when you allow air resistance into the equation, the bowling ball reaches the ground first. The further they fall, the bigger a lead the bowling ball will gain over the soccer ball.
What are some slang terms used among police officers?
The most derogatory terms for the bad guys and citizens who are just pains in the rectum:A.H. = Adam Henry (A-dam H-enry) If you don’t get it…..sometimes you will hear it as “Jack Hole”…..now what starts with an “A” that ends with HOLE ?RICHARD CRANIUM= What starts with a “D” and is a nickname for Richard ? What is the non-medical layman’s term for the Cranium ? Do these clues HEAD you in the right direction ?
What should Indians learn from the rest of the world?
Learn to “Respect” and “Value” its own people1. Our Gods survive on Gold; 22 crores extremely poor Indians can survive on air( Telangana Chief Minister K Chandrasekhara Rao Wednesday offering gold ornaments worth Rs 5.6 crore at the famous Lord Venkateshwara Temple in Tirupati in Feb 2017)How many times you felt our generous rich politicians, film stars, businessmen, celebrities and other people have been blindly donating gold to temples for our God to survive?2. Talk about “Talent Management”, ”Employee motivation” and other Western theories; while you manage your people in a Desi manner.How many times you felt that the degree you earned is undervalued in your current company; that there are more company policies to control you than to help you; that if you did not cancel that family outing to complete that powerpoint ppt on Sunday, the boss will tear you apart on Monday; that you should atleast get a response even after following up with 100 recruiters for an interview?3. Hello, Namaste to Firangis; “go to hell” to its own peopleHow many times you felt that local auto wala, kirana shop wala, or passersby are quite nice to Western foreigners but when YOU need a ride or some help, suddenly their tone turns soar and rude and they shove you aside?4. You will get robbed while bleeding to death on Indian roads(A Delhi passerby picking up the phone of an abandoned accident victim in Aug, 2016)How many times have you passed by an accident victim on the road just coldly staring at the entire TAMASHA? How many times have you found our own people helpful to you at the point when you need them the most?