Because mass does not change from place to place but weight does change from place to place... why? because weight is the amount of gravitational force on an object and mass is the amount of matter in an object. mars has less gravitational force so an object will weigh less than it really weighs there
Sorry I had the answer but it wont let me type numbers :(.:
Answer:
The trains mass in pounds would be 40084.029 if you would round it to the hundreths
Explanation:
