What is the recoil velocity of the pistol? Q5. = 0 kg ms-1 or, 0.02 × 200 + 7.5 × v2 = 0 Answer: For two opposite point charges it is directed from negative to positive charge and equals the product of charge and separation. Give reasons for your answer. Similarly, in the case of extra material, there are long questions, short questions, and multiple-choice questions. Students can find here the CBSE Class 9 Science (Physics) Practice Paper to get an idea of important questions to be prepared for the annual exam 2019. Question 2. This is the post on the topic of the 9th Class Physics Chapter 1 Notes - MCQs, Questions and Numericals pdf. = 40 kg × 5 ms-1 + 3 kg × 0 ms-1 This chapter is all about the solution. Force and Laws of Motion Class 9 Extra Questions Very Short Answer Questions. Explain why? These notes are for all Punjab boards like Lahore Board. 12th Class Physics Chapter 9 ATOMIC SPECTRA Short Question Answers, 12th Class Physics Chapter 10 Nuclear Physics Short Questions Answer, 12th Class Physics CHAPTER 7 ELECTRONICS Short Question Answers, 12th Class Physics Chapter 6 Physics of Solids Short Questions Answer, 12th Class Physics Chapter 4 Electromagnetic Induction Short Question Answers, 11th Class Physics Chapter 5 Circular Motion Short Question Answers, 11th Class Physics Chapter 3 Motion And Force Short Question Answers, 12th Class Physics Chapter 8 DAWAN AND MODREN PHYSICS Short Question Answers. Thus, the balls will move with different speeds. Assume that there is no external unbalanced force working in horizontal direction. KPK Board 10th Class Physics Ch 2 Sound Short Ques... KPK Board 10th Class Math Ch 1 Quadratic Equation ... KPK Board 10th Class Computer Ch 6 Computer Logic ... KPK Board 10th Class Computer Ch 5 Loop Structure ... KPK Board 10th Class Computer Ch 4 Control Structu... KPK Board 10th class Computer Ch 3 Input and Outpu... KPK Board 10th class Computer Ch 2 Programming in ... KPK Board 10th class Computer Ch 1 Programming Tec... کے پی کے بورڈ 12 کلاس اردوسبق نمبر10 سیاہ فام مختصر سوال و جواب, ملکی پرندےاور دوسرے جانورسبق نمبر 10 نہم کلاس مختصرسوال و جواب پنجاب بورڈ, کے پی کے بورڈ 12 کلاس مطالعہ پاکستان سبق نمبر5 حکومتی ڈھانچہ اور اچھا پاکستان کا نظام حکومت مختصر سوال و جواب, کے پی کے بورڈ 12 کلاس اردوسبق نمبر8 کتبہ مختصر سوال و جواب, مرزا غالب کےعادات و خصاُٰل سبق نمبر 2 نہم کلاس مختصرسوال و جواب پنجاب بورڈ, پنچایت سبق نمبر 6 نہم کلاس مختصرسوال و جواب پنجاب بورڈ, KPK Board 10th class Chemistry Ch 6 Environmental chemistry short questions answers, KPK Board 10th class Chemistry Ch 7 Environmental chemistry II water short questions answers. Momentum of the sphere just before it touches the ground = mv Q10. According to law of conservation of momentum, we have IMPORTANT QUESTION ANSWERS FOR BOARD EXAMS 2020 ! These notes are unique in the respect that it has adopted a new curriculum to describe the question and answers of all questions. (adsbygoogle = window.adsbygoogle || []).push({}); Q3. For bullet: m1 = 20g = 0.02 kg, = (3 + 2v2)kg ms-1 NCERT Solutions for Class 12 Business Studies Chapter 1 प्रकृति और प्रबंधन का महत्व. Total momenta of the pistol and bullet before the fire Total momenta of the pistol and bullet before the fire Here are English medium and urdu medium 9th class physics short questions notes in PDF. ∴ The total momenta of the boy and cart before the interaction We Want To Be One Of The Cheapest Education Portal In India. It remarkable that these lines are imaginary. Which would require a greater force—accelerating a 2 kg mass at 5 ms-2 or a 4 kg mass at 2 ms-2 ? The dense population indicates strong electric field and real populate indicates weak field. As per the law of conservation of momentum, the total momentum is conserved during the interaction. The velocity-time graph of a ball moving on the surface of a floor is shown in the figure. The notes can be download in PDF format here. 3 + 2v2 = 0 or, v = $$\frac{200}{43}$$ = 4.65 ms-1 If so, in which direction? (a) Acceleration during interval 0 to 3 s Negative sign indicates that the direction in which the pistol would recoil is opposite to that of bullet (right to left). [NCERT Exemplar] The velocity-time graph of an object of mass m = 50 g is shown in figure. This is because as the train stops, the lower part of the person’s body comes to rest along with the bus while upper part of his body continues to remain in ^notion due to inertia of motion and thus he falls forward.