Perfect! From both the animation as well as from the slope of the graph, it is clear that the maximum velocity is at $$t = 4$$s.
Object covered a distance of $$10 \, \mathrm{m}$$ in $$2 \, \mathrm{s}$$ and stayed there until $$6 \, \mathrm{s}$$
Object moved to the right until $$2 \, \mathrm{s}$$, then moved up until $$6 \, \mathrm{s}$$, and then moved right until $$8 \, \mathrm{s}$$
Object was at rest until $$2 \, \mathrm{s}$$, then travelled at uniform velocity of $$10 \, \mathrm{m/s}$$ until $$6 \, \mathrm{s}$$ and then returned to rest
Object attained a speed of $$10 \, \mathrm{m/s}$$ after $$2 \, \mathrm{s}$$, and reversed direction at $$6 \, \mathrm{s}$$ and returned to rest