two bodies increases the speed a mo D. Match the following: Column A Column B 1. A bouncing ball a. Second 2. A spinning top b. Vector 3. A swing in motion c. Rectilinear motion 4. A plucked string of a musical instrument d. Multiple motion 5. A ball rolling on the ground e. Vibratory motion 6. Velocity f. Oscillatory motion 7. Distance g. Rotatory motion h. Metre 8. Speed i. Distance = Time 9. Time betes j. Metre per second 10. Force PHYSICS 7
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The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of an object's speed and direction of motion
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(A) A bouncing ball bounces in a plane so, it is a rectilinear motion.
(B) A spinning top rotates about an axis so, rotatory motion.
(C) Swing in motion creates oscillation like a bob hanging by a thread.
(D) Plucked string, vibrates.
(E) Rolling ball on the ground has both rotational and translational motion.
(F) Velocity = Displacement/Time
∴ meter/second.
(G) SI unit of distance is meter.
(H) Acceleration = Velocity/Time
∴ meter/second^2
(I) SI unit of time is second.
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