In an experiment to measure the specific heat capacity of water, a stream of water flows at a steady rate of 5.0 g/s an electrical heater dissipating 140 W. A temperature rise
of 5.0 K is observed. A quantity, L, of the heat supplied is lost to the environment. On
increasing the rate of flow of water to 10.0 g/s, the same temperature rise is produced
with a dissipation of 250 W. The heat lost to the environment is also L.
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Deduce a value for the specific heat capacity of water.

What even is this. where is the question

Sorry i don’t know what to do

Answerboth technicians (a) and (b);

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.