4:49 PM session masteringphysics.com Assignments CH 9 TEM 12 A 24.0 G Ball... Pe

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4:49 PM session masteringphysics.com Assignments CH 9 TEM 12 A 24.0 G Ball... Pearson's MyLab & Master. PHYSICS Problem 11.65 Problem 11.65 A 100 g ball moving to the nght at o ms collides head-on with a 20o gban that is moving to the left at 3.0 m/s. Part A the collision is perfectly elastic, what are the speeds ofeach ball after the collision? Express your answer with the appropriate units. (tu), Value Units Submit My Answers Give up Part B Express your answer with the appropriate units. (ver) Value Units Subrnt My Answers Give Up Part c What is the direction of 100g ball after the collision? downward O to the right O to the left Submit My Answers Give Up Correct

Explanation / Answer

A]

The velocities of the balls will be interchanged as the collision is perfectly elastic.

so, new speed of 100g ball = 3 m/s

B] new speed of 200g ball = 4 m/s

C] 100g ball will now move to left due to conservation of momentum.

D] 200g ball will now move to right due to conservation of momentum.

E] mu + m'u' = (m + m')V for an inelastic collision.

=> 0.1(4) - 0.2(3) = (0.1 + 0.2)V

V = - 0.67 m/s

or 0.67 m/s travelling to left.

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