How solve it?

Question

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

1798 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-02-10T21:37:34

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.

#"Impulse"="Applied Force " Fxx"Time " Delta t#
#"Change in momentum"="Mass " mxx"Change in velocity "Deltav#

Equating the two we get
#FxxDeltat=mxxDeltav#

(A) Plugging in given values we get
#"Momentum developed "=200xx10=2000# #"N" cdot "s"#

B) Change of speed of the particle#=2000/2=1000" m"cdot"s"^-1#
#"Final speed" ="Initial Speed"+1000" m"cdot"s"^-1#