Momentum and CollisionHard
Question
A body of mass 1 kg strikes elastically with another body at rest and continues to moves in the same direction with one fourth pf the initial velocity. The mass of the other body is -
Options
A.0.6 kg
B.2.4 kg
C.3 kg
D.4 kg
Solution
COME : m1u1 + m2u2 = m1v1 + m2v2
1 × u + 0 = 1 ×
+ mv2 ⇒ 
u = mv2 ....(i)
e = -
= - 
v2 = + u = 
.....(ii)
(i) & (ii)
u = m 
⇒ m = 
= 0.6kg
1 × u + 0 = 1 ×
+ mv2 ⇒ u = mv2 ....(i)e = -
= - v2 = + u = .....(ii)(i) & (ii)
u = m ⇒ m = = 0.6kgCreate a free account to view solution
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