Question
One object is at rest and another is moving. The two collide in a one-dimensional,
completely inelastic collision. In other words, they stick together and move off with
shared velocity. The speed of the object that is moving initially is 25 m/s. The masses of
the two objects are 3.0 and 8.0 kg. Determine the final speed of the two-object system
after the collision for the case when the large-mass object is the one moving initially and
the case when the small-mass object is the one moving initially.
completely inelastic collision. In other words, they stick together and move off with
shared velocity. The speed of the object that is moving initially is 25 m/s. The masses of
the two objects are 3.0 and 8.0 kg. Determine the final speed of the two-object system
after the collision for the case when the large-mass object is the one moving initially and
the case when the small-mass object is the one moving initially.
Answers
Henry
Case #1:
Momentum = m1V1-m2V2 =8*25-3*0 = 200
Momentum = (m1+m2)V = 200
(8+3)*V = 200
V = 18.18 m/s
Case #2:
Momentum. = 3*25-8*0 = 75
(m1+m2)*V = 75
(8+3)*V = 75
V = 6.82 m/s
Momentum = m1V1-m2V2 =8*25-3*0 = 200
Momentum = (m1+m2)V = 200
(8+3)*V = 200
V = 18.18 m/s
Case #2:
Momentum. = 3*25-8*0 = 75
(m1+m2)*V = 75
(8+3)*V = 75
V = 6.82 m/s