1. An object is suspended with a string which gets stretched. When the object is completely immersed in water, the extension of string decreases. Explain why it happens. 2. A particle moves over three quarters of a circle of radius r. What is the magnitude of its displacement? 3. A rocket can move in air free space, but a jet plane cannot. Why? 4. Explain why some of the leaves may get detached from a tree if we vigorously shake its branch. 5. Which would require a greater force -accelerating a 10g mass at 5ms-2 or a 20g mass at 2ms-2 ? 6. The velocity-time graph of a particle of mass 50 g moving in a definite direction is shown in the following figure. Answer the questions based on this figure. a) What is the velocity of the particle at point ‘A’? b) Find the momentum of the particle at time t = 4 s. c) What does the slope of a graph represent? d) Calculate the distance travelled in 4 seconds
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Jul 10, 2018 - 1. An object is suspended with a string which gets stretched. ... the object is completely immersed in water, the extension of string decreases. Explain why it happens. 2. A particle moves over three quarters of a circle of radius r. What is the ... Explain why some of the leaves may get detached from a tree if we ...
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Jul 10, 2018 - 1. An object is suspended with a string which gets stretched. the object is completely immersed in water, the extension of string decreases. Explain why it happens. 2. A particle moves over three quarters of a circle of radius r. What is the Explain why some of the leaves may get detached from a tree if we
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