MCQ Questions for Class 9 Science with Answers were prepared based on the latest exam pattern. Choose the correct answer: Question 1. Then the velocity of car is given by,Solution:We have,Distance covered: 50km = 50$$\times$$ 1000 m = 50,000mTime taken: 55 minutes = 55$$\times$$ 60 seconds = 3300 secondsVelocity = ?By using formula,Velocity = $$\frac{Displacement (s)}{ Time taken (t)}$$= $$\frac{s}{t}$$=$$\frac{50,000m}{3300sec}$$= 15.15m/sec$$\therefore$$ the velocity of motorbike is 15.15m/sec. These short solved questions or quizzes are provided by Gkseries. For example, fruits fall on the ground due to earth’s gravity. Selina Publishers Concise Physics for Class 7 ICSE Solutions all questions are solved and explained by expert teachers as per ICSE board guidelines. Saranya jogs from one end A to the other end B of a straight road of length 320m in 2min 40 seconds. SURVEY . It is a network of social relationships which cannot see or touched. A body is moving with uniform velocity its acceleration is: Ans. A bus travels 54 km in 90 minutes. Calculate the speed with which the gun recoils. After this, bring the scale near the pieces of paper and observe it. During the ride, you will bend towards the centre and the mud fly off tyres of your bicycle while riding. (c) … It’s SI unit is a metre. We have Provided Force and Laws of Motion Class 9 Science MCQs Questions with Answers to help students understand the concept very well. Mention which is the most common thing in almost all the clocks. contact. The physical quantity having only magnitude but no direction is called scalar quantity. Solution: We have, Distance travelled = 500m Time taken = 30 seconds Speed = ? Answer: The initial velocity of the motorbike is 15m\seconds. Explain the types of stability with suitable examples. 2. Magnetic force:It is the force of attraction exerted by the magnets. ... asked 1 minute ago in Force and Motion by Pahi (27.0k points) force and motion; class-7; 0 votes. Solution : Given:-Number of oscillations = 10. Mention any two conditions for stability of a body? (a) Define momentum. Gravitational force acts between sun and earth because of their masses. A car covers a distance of 500 metres in 30 seconds. Give the basic unit of speed. A body is said to be moving in variable velocity if it covers the unequal distance in equal interval of time in a fixed direction. Once you’ve finished with the questions, scroll down the page and check your answers … Correct! The earth attracts a body of mass 1 kg with a force of 10 N. The mass of a boy is 50 kg. After this, pull the brick by using spring balance and also note down the readings shown by the spring balance. What would happen to the ball if a greater force was applied on the ball along its direction of motion? This solution contains questions, answers, images, explanations of the complete Chapter 9 titled The Fun They Had of Maths taught in class 9. Answer As there is no external force on the bicycle, it moves with constant speed Force can be completely described alone by its magnitude, hence it is a scalar quantity. Force can be defined as an influence causing a body at rest or moving with constant velocity to undergo acceleration. The force which acts between any two objects because of their masses is called gravitational force. FALSE. If we want to shift our table or anything from one place to another place then, we either push or pull the table to maintain in that place. 2 min. What is the reason behind it? (a) F= m/a. After you have studied lesson, you must be looking for answers of its questions. The earth revolves around the sun due to the gravitational force. Due to friction, noise is also produced in machine. Class 8 Science NCERT Solutions for Force and Pressure. The physical quantity having both magnitude and direction is called vector quantity. Streamlined shape reduces friction. Example: Iron nails get attached with bar magnet due to the magnetic force. It can change the state of the body. answer choices . with these valuable textbook solutions. SURVEY . Mass, length, time, distance, area, volume, etc are some examples of a scalar quantity. Lubricants of suitable viscosity can be used to reduce friction. It is calculated by the given formula:Velocity = $$\frac{Displacement (s)}{ Time taken (t)}$$. SURVEY . Worksheets have become an integral part of the education system. Friction can be reduced by changing the design of the fast moving objects. Bus travelling with increasing acceleration (non – uniform acceleration) Time (s) 0, 1, 2, 3, 4, 5, Speed (ms^-1) 0, 2, 8, 18, 32, 50, Bus travelling at uniform deceleration Time (s) 0, 1, 2, 3, 4, 5 Speed (ms^-1) 50, 40, 30 20, 10, 0, Bus travelling at uniform acceleration Time (s) 0, 1, 2, 3, 4, 5 Speed (ms^-)1 0,18, 32, 42, 50, Bus travelling at uniform speed of m/s Time (s) 0, 1, 2, 3, 4, 5 Speed (ms^-1) 10, 10, 10, 10 ,10, Draw velocity-time graph for the following data: Time (s) 0, 1, 2, 3, 4, 5 Speed (ms^-1) 0, 0, 0, 0, 0, Write the differences between distance and displacement. (a) magnitude of displacement, Distance travelled by a body in a given time (a) is always positive (b) can be zero or positive (c) is always negative. Similarly, if we throw something up in the sky, it returns back to the earth after few seconds due to the force of attraction exerted by the earth that pulls all object towards its centre which is known as gravity.Activity 4Take your eraser and throw it towards the sky. gravity. This type of force resist motion between two surfaces that are pressed together. The mean of initial velocity and final velocity of a moving body is called average velocity. This solution contains questions, answers, images, explanations of the complete Chapter 9 titled The Fun They Had of Maths taught in class 9. Once you find your worksheet(s), you can either click on the pop-out icon or download button to print or download your desired worksheet(s). It means that to move any object from one position to another position, that object has either to be pulled or pushed. Then put the nails near the bar magnet. Check Video's Description for All Theoretical Questions Answer. It has both magnitude and direction. Pulling force: We use force to pull a table from one place to another. The differences between distance and displacement are as follows. The velocity of a body is the distance covered by the body per unit time in a fixed direction. We have provided Force and Pressure Class 8 Science MCQs Questions with Answers to help students understand the concept very well. Friction can be reduced by changing the design of fast moving objects.

## force and motion class 7 questions and answers

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