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18 Dec 2019

Two billiard balls of equal mass undergo a perfectly elastic head-on collision. If one ball's initial speed was 2.00m/s, and the other's was 3.00m/s in the opposite direction, what will be their speeds after the collision?

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Jean Keeling
Jean KeelingLv2
31 Dec 2019
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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A ball of mass 0.440 kg moving east with a speed of 3.30 m/s collides head-on with a 0.220 kg ball at rest. If the collision is perfectly elastic, what will be the speed and direction of each ball after the collision?

 

Two billiard balls with the same mass m move in the direction of one another. Ball one travels in the positive x-direction with a speed of v1i, and ball two travels in the negative x-direction with a speed of v2i. The two balls collide elastically, and both balls change direction after the collision.

a) Write an expression for the horizontal component of the system's initial momentum, pi,x, in terms of m, v1i and v2i.

b) Write an expression for the horizontal component of the system's final momentum, pf,x, in terms of m and the final speeds of ball one, v1f, and ball two, v2f.

c) If the initial speedx of the balls were v1i = 2.0 m/s and v2i = 1.0 m/s, what would be the final speed and direction of ball two, v2f, in meters per second?

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