A block of mass m is projected across a horizontal surface with an initial speed v. It slides until it stops due to the friction force between the block and the surface. The same block is now projected across the horizontal surface with an initial speed v/2. When the block has come to rest, how does the distance from the projection point compare to that in the first case?

1.It is the same.
2.It is half as large.
3.It is one fourth as large.
4.It is none of these.


3

Physics & Space Science

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