However, since we are only considering the interval [0, 4], we only need to consider t = 2.
Now, we need to find the position of the cart at t = 0, t = 2, and t = 4:
h(0) = 2(0)^3 - 21(0)^2 + 60(0) = 0
h(2) = 2(2)^3 - 21(2)^2 + 60(2) = 16 - 84 + 120 = 52
h(4)
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