Which scenario could be represented by the motion map? a car speeds up to merge onto the freeway and then continues at a constant velocity. a car speeds up to pass a truck, then slows down to a constant velocity. a car slows to stop at a stop sign. once traffic is clear, the car speeds up. a car slows to makes a u-turn, then continues in the opposite direction.

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s