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Force and momentum

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Assertion :- If a particle is acted upon by an external force its momentum must change Reason :- |(dvec(v))/(dt)| is ALWAYS equal to (d)/(dt)|vec(v)| Here vec(v) has its usual meaning.

A small puck is sliding to the right with momentum vec(P)_(1) on a horizontal, frictionless surface, as shown in figure. A force is applied to the puck for a short time and its momentum afterward is vec(P)_(f) . Which lettered arrow shows the direction of the impulse that was delovered to the puck ?

Force means change in momentum.

Assertion : Force can be subtraced momentum. Reason : Physical quantities with different mass and dimensions can be subtracte.

Momentum and change in momentum are always in same direction.

Product of mass and momentum of body is called linear momentum.

The force ‘F’ acting on a particle o f mass ‘m ’ is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to 8 s is

Define angular momentum.