JEE 2022 | सरल रेखा में गति | Straight Line Motion | Doubtnut | Shubham Sir | Hindi Medium

Five persons Lopa, Kripa, Sumi, Jani and Sush are sitting in a straight line facing north. Sush is to the immediate left of Sumi, Jani is to the immediate right of Lopa. Kripa is between Sush and Jani. Who is sitting between Lopa and Kripa? पाँच व्यक्ति लोपा, कृपा, सुमी, जानी तथा सुष एक सीधी रेखा में उत्तर की ओर मुख करके बैठे हुए हैं। सुष, सुमी के तुरंत बाएँ को है, जानी, लोपा के तुरंत दाएँ को है। कृपा सुष तथा जानी के बीच है। लोपा तथा कृपा के बीच कौन बैठा हुआ है?

In a triangle ABC , the sides are AB= 16 cm, AC = 63cm, BC = 65cm. From A, a straight line AM is drawn up to the midpoint M of side BC. Then the length of AM is equal to : त्रिभुज ABC में, AB = 16 सेमी, AC =63 सेमी, BC = 65 सेमी है | A से भुजा BC के मध्य बिंदु M तक एक सीधी रेखा AM खीची जाती है | AM की लंबाई ज्ञात करें |

The area of a triangle ABC is one unit. DE is a straight line parallel to BC , joining the points D and E on AB and AC respectively such that AD : DB = 1 : 6. The ratio of the areas of the triangles ADE and ABC is : एक त्रिभुज ABC का क्षेत्रफल 1 इकाई है | DE, BC के समानांतर एक सीधी रेखा है जो क्रमशः AB और AC पर स्थित बिंदु D तथा E को इस प्रकार जोड़ती है कि AD : DB = 1 : 6 है | त्रिभुज ADE और ABC के क्षेत्रफल में अनुपात ज्ञात करें |

In one-dimensional kinematics, a particle can move strictly along a straight line. The description of motion of the particle can be done in two ways: (i) mathematical equation and (ii) graphs. The choice of a particular method for solving a problem often depends upon the type and nature of problem, for example the graphical method provides more physical insight One dimensional motion is categorised into 1. motion with constant velocity 2. motion with constant acceleration, and 3. accelerated and de-accelerated motion If you represent inotion (1) by the graph on position time and velocity-time coordinates, the graphs may look like as given below. One very interesting case comes up, when a particle is thrown at a certain angle from the horizontal, the particle travels in the medium along a curved path, known as parabola. - The trajectory of the parabola written in the mathematical equation is given by y=xtantheta-(1)/(2)(gx^(2))/((v_0costheta))^(2) Ineglect resistance of medium and its motion where Vs and are the initial velocity of the projectile and the projection angle at the point of projection measured with the + x axis. There are some applications which we have seen in our life, like in many game shows, the theory of the projectile is always used An air gun is aimed at an elevated target, which is released in a free fall by some mechanism as the bullet leaves the nozzle. Irrespective of falling speed of object, the bullet will always hit the target. QOut of the two methods, graphical method and mathematical equation, which gives you the better precision

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