One way to monitor global warming is to measure the average temperature of the ocean. researchers are doing this by measuring the time it takes sound pulses to travel underwater over large distances. at a depth of 1000 m, where ocean temperatures hold steady near 4°c, the average sound speed is 1480 m/s. it's known from laboratory measurements that the sound speed increases 4.0 m/s for every 1.0°c increase in temperature in one experiment, where sounds generated near california if the smallest time change that can be reliably detected is 1.0 s, what is the smallest change in average temperature that can be measured? express your answer with the appropriate units. ?

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero.