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Chapter 9: Q. 1 (page 227)
If a particle’s 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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Which has the larger kinetic energy, a 10 g bullet fired at
500 m/s or a 75 kg student running at 5.5 m/s?
The driver of a car traveling at 60 mph slams on the brakes, and the car skids to a halt. What happened to the kinetic energy the car had just before stopping?
The two ropes are used to lower a 255 kg piano 5.00 m from a second-story window to the ground. How much work is done by each of the three forces?
Which has the larger kinetic energy, a 10 g bullet fired at
500 m/s or a 75 kg student running at 5.5 m/s?
A g particle at is moving at m/s in the direction. As it moves, it experiences a force given by . What is the particle’s speed when it reaches m?
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