Atrolley of mass 1000 kg moving at 10 m/s collides and hooks onto another identical trolley at rest. what is the velocity of both the trolleys together?

v = 5 m/s

Explanation:

As we know that mass of the trolley which is moving is given as

m = 1000 kg

its speed is given by

now we know that when external force on a system is zero then its total moment will remains conserved

so here when two trolleys will collide then there is no external force on it

so here momentum of two trolleys will remain conserved

so we can say

here we will have

c.is a substance that requires a small amount of energy per gram to raise its temperature; has strong cohesive forces between molecules.

explanation:

a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

at right angles to each other