A.4 Kg red marble is rolling at 1.78 m/s when it collides with a .3 Kg blue marble that is stationary. The red marble bounces off and is traveling .8 m/s after the collision. What is the post collision speed of the blue marble?

If there was no gravity then their would be no downword force on the football to have it return the the grownd, and if there was no friction (mainly air friction) then there would be no opposing force the stop the ball from moving through the air allowing the ball to travle ∞.

Answer (d) valerie rides her bike south at 8 kilometers per hour///owen jogs south at 8 kilometers per hour ;

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Sound wavelength of visible light waves