# How solve it?

## Momentum physics On a particle of 2 kg there is a net force of 200 NEWTONS calculate A) the momentum developed by force in 10 seconds B) the final speed of the particle THANK YOU

Feb 10, 2017

The impulse-momentum theorem states that:

"The change in momentum of an object is equal to the impulse applied to it.

This is also an equivalent statement of Newton's second law of motion.

$\text{Impulse"="Applied Force " Fxx"Time } \Delta t$
$\text{Change in momentum"="Mass " mxx"Change in velocity } \Delta v$

Equating the two we get
$F \times \Delta t = m \times \Delta v$

(A) Plugging in given values we get
$\text{Momentum developed } = 200 \times 10 = 2000$ $\text{N" cdot "s}$

B) Change of speed of the particle$= \frac{2000}{2} = 1000 {\text{ m"cdot"s}}^{-} 1$
${\text{Final speed" ="Initial Speed"+1000" m"cdot"s}}^{-} 1$