Punjab Text bool board, Physics. Solution manual Chapter 3 (Dynamics) 3.1 Encircle the correct answer from the given choices: i . Newton's first law of motion is valid only in the absence of: (a) force (b) net force (c) friction (d) momentum ii. Inertia depends upon (a) force (b) net force (c) mass (d) velocity iii . A boy jumps out of a moving bus. There is a danger for him to fall: (a) towards the moving bus (b) away from the bus (c) in the direction of motion (d) opposite to the direction of motion iv. A string is stretched by two equal and opposite forces 10 N each. The tension in the string is (a) zero (b) 5 N (c) 10 N (d) 20 N v . The mass of a body: (a) decreases when accelerated (b) increases when accelerated (c) decreases when moving with high velocity (d) none of the above vi . Two bodies of masses m1 and m2 attached to the ends of an inextensible string passing over a frictionless pullin...
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