Change in volume = mass x coefficient of linear expansion x change in temperature
.002 x .0001802 x 30 = .000010812
 initial volume + change in volume = Final volume
.002 + .000010812 = .002010812 m cubed
        
                    
             
        
        
        
F = G m1*m2 / r^2 => [G] = [F]*[r]^2 /([m1]*[m2]) = N * m^2 / kg^2
That is one answer.
Also, you can use the fact that N = kg*m/s^2
[G] = kg * m / s^2 * m^2 / kg^2 = m^3 /(s^2 * kg)
        
             
        
        
        
1.14 km = Distance
2.30 m/s = Speed
5.12 cm/s2 = Speed
6.150 mph = Distance
8.3.2 sec = Speed
9.25 ft = Distance 
        
             
        
        
        
By using Ohm's law, we can find what should be the resistance of the wire, R:

Then, let's find the cross-sectional area of the wire. Its radius is half the diameter,

So the area is

And by using the resistivity  of the Aluminum, 

, we can use the relationship between resistance R and resistivity:

to find L, the length of the wire:
 
        
             
        
        
        
Well they could go down a hill to gain more kinetic energy.