Aman jumps from an airplane and does not open his parachute immediately. as he falls, two forces act on him: the force mg due to gravity and the force na of air resistance. now he opens his parachute and begins to fall at constant velocity what forces act upon him now? 1. since he is falling at constant velocity the force of air resistance no longer acts on him. 2. the same two forces act on him as before the only change is that with the parachute open, the two forces sum to zero. 3. when the parachute opens there is an additional force np which has nothing to do with either na or mg. 4. since he is falling at constant velocity gravity no longer acts on him. 5. none of these

the answer is b ) square root of 5

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation