Cos of error of special characters
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Answer:
The heat transferred to water equals 1600 kJ
Explanation:
By the conservation of energy we have
All the kinetic energy of the moving vehicle is converted into thermal energy
We know that kinetic energy of a object of mass 'm' moving with a speed of 'v' is given by

Thus

Thus the heat transferred to water equals 
Answer:
negative and linear
Explanation:
its a straight line going down