Question

If a thief steals gold weighing 5 tonnes from a moving train, and escapes, what will happen to the speed of the train? Why? Assume the driver is not altering the speed accordingly. Does it violate law of conservation of energy​

Answer 1

Answer:

If a thief steals gold weighing 5 tonnes from a moving train, and escapes, what will happen to the speed of the train? Why? Assume the driver is not altering the speed accordingly. Does it violate law of conservation of energy

Answer 2

Explanation:

we know momentum formula:-

p=m×∆v=

assume the trains mass is "m " without gold

momentum of train p= (5000+ m)v

now when thief steals the gold momentum will be the same but velocity will be change :-

(5000+ m)v= mv2 -5000v1

v1 is zero because thief steals gold and this is gold velocity

hence = velocity will cange positively

v2=(5000+m)/m