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27 Nov 2019
A 0.27 kg particle moves in an xy plane according to x(t) = - 19 + 1 t - 2 t3 and y(t) = 19 + 4 t - 4 t2, with x and y in meters and t in seconds. At t = 1.1 s, what are (a) the magnitude and (b) the angle (within (-180°, 180°] interval relative to the positive direction of the x axis) of the net force on the particle, and (c) what is the angle of the particle's direction of travel?
A 0.27 kg particle moves in an xy plane according to x(t) = - 19 + 1 t - 2 t3 and y(t) = 19 + 4 t - 4 t2, with x and y in meters and t in seconds. At t = 1.1 s, what are (a) the magnitude and (b) the angle (within (-180°, 180°] interval relative to the positive direction of the x axis) of the net force on the particle, and (c) what is the angle of the particle's direction of travel?
