An animation shows a planet orbiting a star. The instantaneous velocity vector of the planet is shown on the animation and is blue. The instantaneous acceleration vector is also shown and is orange. The units of time are 1 x 107 s. View the animation and answer the following questions.


a) Is vx at t = 3.00 x 107 s positive, negative, or zero?
negative
zero
positive - Correct!


b) Is vy at t = 3.00 x 107 s positive, negative, or zero?
zero
negative
positive - Correct!


c) During the time interval between t = 0 and t = 4 x 107 s, at what instant is vy equal to zero and vx in the negative direction?
t = [1.45] s

d) Is ax at t = 3.00 x 107 s positive, negative, or zero?
zero
positive
negative - Correct!


e) Is ay at t = 3.00 x 107 s positive, negative, or zero?
zero
positive - Correct!
negative


f) During the time interval between t = 2.00 x 107 s and t = 6.00 x 107 s, at what instant is ay equal to zero and ax in the negative direction?
t = [4.02] s