The speed of a particle moving in a circle 2.0 m in radius increases at the constant rate of 4.4 m/s2 . At an instant when the magnitude of the total acceleration is 6.0 m/s2, what is the speed of the particle?
a. 3.9 m/s
b. 2.9 m/s
c. 3.5 m/s
d. 3.0 m/s
e. 1.4 m/s
b
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