If the Sun, Earth, and Moon are lined up as shown, the Earth would have. Spring tides where there is almost no difference in the tides

Spring tides, which is where there are very high tides and very low tides

Neap tides where there is almost no difference in the tides.

Neap tides, which is where there are very high tides and very low tides

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".