Afreight train rolls along a track with considerable momentum. if it were to roll at the same speed but had twice as much mass, it's momentum would be

The momentum would be doubled

Explanation:

The magnitude of the momentum of the freight train is given by:

where

m is the mass of the train

v is its speed

In this problem, we have that the speed of the train is unchanged, while the mass of the train is doubled:

therefore, the new momentum is

so, the momentum has also doubled.

when cloud cover increases then the suns ray's which provides the earth with light and warmth gets covered due to the due to the suns ray's being blocked, the temperature in that region

therefore to conclude i would like to say that,

=more the cloud cover, the lesser the

happy to

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v 154.9= 0.9 length length s little over 154.9cm