In a lab experiment, a student is trying to apply the conservation of momentum. two identical balls, each with a mass of 1.0 kg,
roll toward each other and collide. the velocity is measured before and after each collision. the collected data is shown below.
initial velocity
ball a
(m/s)
+1.0
+0.5
+2.0
trial 1
trial 2
trail 3
trial 4
initial velocity
ball b
(m/s)
-2.0
-1.5
+1.0
-10
final velocity
ball a
(m/s)
-2.0
-0.5
+1.0
+1.5
final velocity
ball b
(m/s)
-1.0
-0.5
-2.0
-1.5
+0.5
which trial shows the conservation of momentum in a closed system?
o
o
trial 1
trial 2
trial 3
trial 4
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