long questions & short questions for Class 9 on EduRev as well by searching above. Parallel, normal force. Athlete uses inertia of motion to complete the jump. By continuing, I agree that I am at least 13 years old and have read and agree to the. 7 - d. 8 - a. However the direction of force is not given so it can’t be determined that it is moving away from the earth, Hence the correct answer is C. The v - t graph of a body of 5 kg moving with the help of a force is shown. Newton's first law of motion states that every body remains in its state of rest or of uniform motion unless it is compelled by an external force, acting on it which is also known as the law of inertia. When a berry tree is shaken vigorously and suddenly, the fruits are detached from the branches due to inertia of rest. Hence, it has both magnitude as well as direction. These two forces: Acts on either body at normal to each other, Always act on the different bodies in opposite directions, The inertia of an object tends to cause the object, to resist any change in the state of rest or of motion, While catching a stone thrown by your friend you pull the hands back to. When a person walks over a rough surface, direction of friction is along the direction of motion of … If no external force applied then acceleration will be zero, so velocity remain conserve. (a) At rest. 16 - c. 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Force is a vector quantity as it has both magnitude as well as direction. Newton’s first law gives the qualitative study of force which states that everybody remains in its state of rest or of uniform motion, unless it is compelled by an external force. (a) Unable to change by itself the state … In the direction opposite to the direction of motion of bus. This is (b) F= ma. first at the rate of 1.8 m/s, Question.8: Newton’s law of motion gives the

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