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Physics, 26.03.2020 04:59 JayJay9439
In the winter sport of curling, players give a 20 kgstone a push across a sheet of ice. The stone moves approximately 40 m before coming to rest. The final position of the stone, in principle, only depends on the initial speed at which it is launched and the force of friction between the ice and the stone, but team members can use brooms to sweep the ice in front of the stone to adjust its speed and trajectory a bit; they must do this without touching the stone. Judicious sweeping can lengthen the travel of the stone by 3 m.
a. A curler pushes a stone to a speed of 3.0 m/s over a time of 1.4s . Ignoring the force of friction, how much force must the curler apply to the stone to bring it up to speed?
b. The sweepers in a curling competition adjust the trajectory of the stone by
c. Suppose that the stone is launched with a speed of 3 m/s and travels 40 m before coming to rest. What is the approximate magnitude of the friction force on the stone?
d. Suppose the stone's mass is increased to 40 kg, but it is launched at the same 3 m/s. Which one of the following is true?
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In the winter sport of curling, players give a 20 kgstone a push across a sheet of ice. The stone mo...
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