Force, Motion & Gravity MCQs with Answers

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Displacement is a vector quantity because it has both magnitude and direction, unlike scalar quantities which have only magnitude.

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In case of average velocity, a body may follow All of these (straight line, curved, or zigzag path) because average velocity depends only on net displacement and total time, not on the actual path taken.

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Mass is the measure of inertia of a body — the greater the mass, the greater its resistance to change in motion.

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The maximum height in projectile motion is achieved at 90 degrees, because the entire initial velocity is directed vertically upward.

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The torque in a uniformly rotating fan is 0 Nm because there is no angular acceleration, meaning the net torque acting on it is zero.

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At the highest point, the acceleration of an object is 9.8 m/s² downward due to gravity, which acts continuously regardless of the object's velocity.

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The tendency of an object to resist any change in its state of rest or uniform motion is called inertia.

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Mass is calculated using the formula m = W/g, so the mass of the body is 3 kg.

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Grease is used to reduce friction between moving parts of machines because it acts as a lubricant, forming a thin layer between surfaces to minimize direct contact and wear.

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Kinetic energy is a scalar quantity (magnitude only) while momentum is a vector quantity (magnitude and direction).