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Chapter 9: Q. 1 (page 227)
If a particle鈥檚 speed increases by a factor of 3, by what factor does its kinetic energy change?
It will change by a factor of 9
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A particle moving to the left is slowed by a force pushing to the right. Is the work done on the particle positive or negative? Or is there not enough information to tell? Explain.
A ball shot straight up with kinetic energy reaches height . What height will it reach if the initial kinetic energy is doubled?
The force acting on a particle is . How much work does this force do as the particle moves along the x-axis from to ?
FIGURE is the force-versus-position graph for a particle moving along the axis. Determine the work done on the particle during each of the three intervals m, m, and m.
A kg human sprinter can accelerate from rest to m/s in s. During the same time interval, a kg greyhound can go from rest to m/s. What is the average power output of each? Average power over a time interval is
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