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Homework Statement:

a) Identify
the time or times ( ta , tb , tc , etc.) at which the instantaneous velocity is greatest. (b) At which times is it zero? (c) At which
times is it negative?
Relevant Equations:
 instantaneous velocity
My answers: a) At points d the instantaneous velocity should be greatest since slope of cd is greatest I think
b) At point e and g instantaneous velocity is 0
c) at points b, c, and f instantaneous velocity is negative.
Could you please verify my answers?