A particle vibrates according to the equation x= 20cos(16t) where x is in centimeters. determine the amplitude and frequency of the oscillation and also the position when the kinetic energy is at a maximum.
a. A=20 cm, f=5.1 Hz, x=20 cm
b. a= 20 cm, f= 2.5 Hz, x= 20 cm
c. A=20 cm, f= 2.5 Hz, x= 0 cm
d. A= 20 cm, f= 16 Hz , x=0 cm
e. the correct information is not listed in the answer selection.
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