1) A ball of mass 8g moving at 7 m/s E collides head-onelastically with a ball o

Question

1) A ball of mass 8g moving at 7 m/s E collides head-onelastically with a ball of mass 15g moving at 10 m/s W. What is thespeed in m/s of the first ball after the collisioin. 2) In previous problem, what is the speed of the second ballin m/s after the collision? 1) A ball of mass 8g moving at 7 m/s E collides head-onelastically with a ball of mass 15g moving at 10 m/s W. What is thespeed in m/s of the first ball after the collisioin. 2) In previous problem, what is the speed of the second ballin m/s after the collision?

Explanation / Answer

The velocity after collision is given by v1=(m1-m2)/(m1+m2)*u1+2m2/(m1+m2)*u2 v1=(0.008-0.015)/(0.008+0.015)*7+2*0.015/(0.008+0.015)*-10 v1=-15.17391304m/s W v2=2m1/(m1+m2)*u1+(m2-m1)/(m1+m2)*u2 v2=2*0.008/(0.008+0.015)*7+(0.015-0.008)/(0.008+0.015)*-10 v2=1.82608m/s E Hence we get by it. "Hope this helps!Best of luck for the rest of yourcoursework."

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