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Answer:
10g
Explanation:
As the Law of Conservation of Mass states that " Mass can neither be created nor be destroyed in a chemical reaction".
Though melting of tin isn't a chemical change, the same logic is applied here...
Hence,
The mass of tin will be 10 g itself...
Final velocity

Data & Formula:
. final velocity: vf = ?
. initial velocity : vi = 1.9 m/s
. acceleration : a = 0.060m/s^2
. distance : d = 8.5 km
![vf\text{ = }\sqrt[]{vi^2+2ad}](https://tex.z-dn.net/?f=vf%5Ctext%7B%20%3D%20%7D%5Csqrt%5B%5D%7Bvi%5E2%2B2ad%7D)