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1) The contact points between the two surfaces form a sort of a. cold welds b. hot welds c. strips d. momentum
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2) The motion of an object in a circular path is called a. circular motion b. translatory motion c. vibratory motion d. linear motion
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3) (mass of a body × gravity) is equal to a. weight b. inertia c. force d. momentum
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4) The constant of friction is represented by a. ω b. δ c. σ d. μ
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5) Weight is measured by a a. beam balance b. spring balance c. screw gauge d. physical balance
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6) Newton is denoted by a. n b. N c. w d. R
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7) The quantity of matter possessed by the body is known as a. mass b. weight c. inertia d. force
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8) If the coefficient of friction between wood and marble is 0.6,mass of wood is 6 kg, then the force of friction between the wood and the horizontal marble floor will be a. 36 N b. 30 N c. 40 N d. 23 N
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9) The tires roll over easily on a. smooth surface b. rough surface c. on coal tar d. all of above
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10) According to newton's 2nd law of motion, with mass ‘m’, velocity ‘v’ and radius ‘r’ the centripetal force is equal to a. mv² ×r b. (mv²)⁄r c. mv² + r d. mv² - r
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