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Chapter 10: Q.13 (page 256)
A cannon tilted up at a angle fires a cannon ball at from a top a -high fortress wall. What is the ball鈥檚 impact speed on the ground below?
Ball's impact speed on the ground
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You have a ball of unknown mass, a spring with spring constant , and a meter stick. You use various compressions of the spring to launch the ball vertically, then use the meter stick to measure the ball鈥檚 maximum height above the launch point. Your data are as follows:
Use an appropriate graph of the data to determine the ball鈥檚 mass.
What is the final kinetic energy of the system for the process shown in ?
A particle with the potential energy shown in FIGURE Q10.8 is moving to the right at x = 5 m with total energy E.
a. At what value or values of x is this particle鈥檚 speed a maximum?
b. Does this particle have a turning point or points in the range of x covered by the graph? If so, where?
c. If E is changed appropriately, could the particle remain at rest at any point or points in the range of x covered by the graph? If so, where?
A pendulum is made by tying aball to a string. The pendulum is pulled to one side, then released. What is the ball鈥檚 speed at the lowest point of its trajectory?
is the potential-energy diagram for a particle that is released from rest at A. What are the particle鈥檚 speeds at B, C, and D?
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