uniform velocity of an object moving along a straight line. What will be shape of velocity time and position time graphs of such a motion? 10. Why fruits fall down from a tree‚ when its branches are shaken? OR Why is spring made of steel not of copper? 11. A light body and a heavy body have the same momentum . Which one will have greater kinetic energy? Justify. 12. A projectile is thrown with a velocity 5 ms¯¹at
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measured force vs time graph. Data: Item | Value | Mass of Cart | 516g | Impulse | .35N | Velocity before | .343 m/s | Velocity after | -.318 m/s | Momentum before | .177 kg m/s | Momentum after | -.163 kg m/s | change | -.340 kg m/s | Questions: 1.Why is it desirable to have the same initial speed for each data run? If speed differs‚ the momentum will be effected. As velocity increases‚ momentum increases. 2.How will raising the end of the Dynamics Track give the cart the same
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bullet of mass 10 g has a muzzle velocity of 300 m/s. Find (a) the momentum of the bullet (b) the recoil velocity of the gun if its mass is 2.0 kg. 3. A 70 kg man dives away from a stationary canoe with a velocity of 3.0 m/s parallel to the water. If the canoe has a mass of 150 kg‚ find its recoil velocity. 4. A steel sphere of mass 0.10 kg is fired horizontally with a velocity of 30 m/s into a block of plasticine of mass 1.0 kg at rest. With what velocity does the combination move away?
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related basic laws. The same considerations will help you understand the motions of Earth satellites‚ of which there is one natural one and many artificial ones. Angular Measure Motion is described as a time rate of change of position. Angular velocity involves a time rate of change of position‚ which is expressed by an angle. It is important to be able to relate the angular description of circular motion to the orbital or tangential description‚ that is‚ to relate the angular displacement to
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what is his net velocity? If the river is 0.5 miles wide‚ at what point will he land on the other side? Solution: The first step in problem solving is to identify the problem type. In this problem we are asked for a ‘net velocity.’ Since velocities behave as vectors‚ then we have a vector addition problem. A figure is drawn with the vectors indicated. Here vb is the boat’s velocity (still water)‚ vr is the river’s velocity‚ and vnet is the resultant (net) of these two velocities. The vector equation
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Introduction to Mechanisms Yi Zhang with Susan Finger Stephannie Behrens Table of Contents 1 Physical Principles This chapter introduces the basic physical principles behind mechanisms as well as basic concepts and principles required for this course. 1.1 Force and Torque 1.1.1 Force Force: an agent or influence that‚ if applied to a free body results chiefly in an acceleration of the body and sometimes in elastic deformation and other effects. Every day we deal with forces
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does the slope of velocity – time graph give? (a) Distance (c) Acceleration (b) displacement (d) Change in velocity. [1] 2. The displacement of the body can be(a) Positive (c) Zero (b) negative (d) All of these. [1] 3. Which of the following gives both direction and magnitude(a) scalar (c) Both (b) vector (d) None. [1] 4. If a moving body comes to rest‚ then its acceleration is(a) Positive (c) Zero (b) negative (d) All of these depending upon initial velocity. [1] 5.
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to give you wide understanding on the different concepts regarding Constant and Uniformly Accelerated Motion. Upon finishing the SIM‚ the reader is expected to: • identify the motion of an object in terms of distance or displacement‚ speed or velocity‚ and acceleration UNDESPICABLE MECHANICS CHANICS GUIDE CARD ACTIVITY CARD ENRICHMENT CARD ASSESSMENT CARD REFERENCE CARD UNDESPICABLE MECHANICS GUIDE CARD The Guide card presents the big picture‚ I’ll give you the overview
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Motion. 4. Curvilinear Motion. 5. Linear Displacement. 6. Linear Velocity. 7. Linear Acceleration. 8. Equations of Linear Motion. 9. Graphical Representation of Displacement with respect to Time. 10. Graphical Representation of Velocity with respect to Time. 11. Graphical Representation of Acceleration with respect to Time. 12. Angular Displacement. 13. Representation of Angular Displacement by a Vector. 14. Angular Velocity. 15. Angular Acceleration 16. Equations of Angular Motion. 17. Relation
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the earth curves downward by approximately 5 metres over 8000 metres along the horizon‚ satellites launched with a horizontal speed of 8000 m/s can take orbit. At this speed‚ thanks to earth’s curved surface and a satellite’s constant horizontal velocity‚ the satellites‚ which are in free fall once projected‚ keep falling toward the earth‚ but always miss it. Thus‚ under the influence of gravity‚ satellites maintain motion in a circular pattern at a uniform speed. Most satellites are launched
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