Decrease. Gravity is stronger here on earth than on the moon.
        
             
        
        
        
A path of inferences guided to be cherry picked as for which ones were reasonable and which ones had no ability in the real world to sustain in scientific law
        
             
        
        
        
Answer:
Q = 7272 Kilojoules. 
Explanation:
<u>Given the following data;</u>
Mass = 2.0*101kg = 202kg
Initial temperature, T1 = 10°C
Final temperature, T2 = 90°C
We know that the specific heat capacity of iron = 450J/kg°C
*To find the quantity of heat*
Heat capacity is given by the formula;
 
 
Where;
- Q represents the heat capacity or quantity of heat. 
- m represents the mass of an object. 
- c represents the specific heat capacity of water. 
- dt represents the change in temperature.
dt = T2 - T1
dt = 90 - 10
dt = 80°C
Substituting the values into the equation, we have;
 
 
Q = 7272KJ or 7272000 Joules.
 
        
             
        
        
        
The train travells at he speed of 225 km/2.5h
now
225km=225000m
2.5 hr=150min=9000s
=>avg sp of train is=225000/9000s=25m/s