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.
Trial 1
Trial 2
Trail 3
Trial 4
Initial Velocity Initial Velocity Final Velocity Final Velocity
Ball A
Ball B
Ball A
Ball B
(m/s)
(m/s)
(m/s)
(m/s)
+1.0
-2.0
-2.0
-1.0
+0.5
-1.5
-0.5
-0.5
+2.0
+1.0
+1.0
-2.0
+0.5
-1.0
+1.5
-1.5
Which trial shows the conservation of momentum in a closed system?
Trial 1
Trial 2
О СО
Trial 3
Trial 4