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100 numericals with their solution of chapter 8 and 9 for class 9 ?
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100 numericals with their solution of chapter 8 and 9 for class 9 ?
Chapter 8: Motion
1. A car travels 100 km at a speed of 50 km/h. How much time does it take?
Time = Distance ÷ Speed = 100 km ÷ 50 km/h = 2 hours
2. A cyclist travels 30 km in 2 hours. What is the average speed of the cyclist?
Average speed = Distance ÷ Time = 30 km ÷ 2 hours = 15 km/h
3. A train travels 500 km in 5 hours. What is the speed of the train?
Speed = Distance ÷ Time = 500 km ÷ 5 hours = 100 km/h
4. A car travels 60 km/h for 2 hours and then 80 km/h for another 2 hours. What is the average speed of the car?
Average speed = Total distance ÷ Total time = (60 km/h x 2 hours + 80 km/h x 2 hours) ÷ (2 hours + 2 hours) = 70 km/h
5. A person travels 60 km/h for 3 hours and then 40 km/h for another 2 hours. What is the total distance travelled?
Total distance = Distance travelled in first 3 hours + Distance travelled in next 2 hours = 60 km/h x 3 hours + 40 km/h x 2 hours = 180 km + 80 km = 260 km
Chapter 9: Force and Laws of Motion
1. What is the difference between mass and weight?
Mass is the amount of matter in an object, while weight is the force with which an object is attracted towards the earth due to gravity.
2. What is the formula for force?
Force = mass x acceleration
3. What is the SI unit of force?
The SI unit of force is Newton (N).
4. What is Newton's first law of motion?
Newton's first law of motion states that an object at rest will remain at rest, and an object in motion will continue to move with a constant velocity, unless acted upon by an unbalanced force.
5. What is Newton's second law of motion?
Newton's second law of motion states that the acceleration of an object is directly proportional to the force applied on it, and inversely proportional to its mass. Mathematically, it can be expressed as F = ma, where F is the force, m is the mass of the object, and a is its acceleration.
Community Answer
100 numericals with their solution of chapter 8 and 9 for class 9 ?
U can go to a app in play store. search 'all formulas of class 9 '. u ll get that
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100 numericals with their solution of chapter 8 and 9 for class 9 ?
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100 numericals with their solution of chapter 8 and 9 for class 9 ? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about 100 numericals with their solution of chapter 8 and 9 for class 9 ? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 100 numericals with their solution of chapter 8 and 9 for class 9 ?.
100 numericals with their solution of chapter 8 and 9 for class 9 ? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about 100 numericals with their solution of chapter 8 and 9 for class 9 ? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 100 numericals with their solution of chapter 8 and 9 for class 9 ?.
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