A group of physics students hypothesized that for an experiment they are performing, the speed of an object sliding down an inclined plane will be given by the expression. U = 2 * 9.8* 0.725(sin 45) - 0.120(cos 45)
For their experiment, d =0.725 meter,-45.0°, μ* 0.120, and g = 9.80 m/s?
a. 3.15 m/s
b. 6.25 m/s
c. 2.97 m/s
d. 2.43 m/s