A block is moving along a horizontal frictionless surface. A constant force $F$ and a constant resistive force of 5.0 N act on the block as it is moving in the direction of the force $F$, as shown.
The graph shows the variation with time of the momentum of the block.
What is the magnitude of force $F$?
2.0 N
2 )
3.0 N
3 )
5.0 N
4 )
8.0 N
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