uA = 2 m s−1
trolley A
uB = 0 m s−1 trolley B
A B total
mass (kg) 1 1 /
velocity (m s−1) before collision 2.00 0.00 /
after collision /
momentum (kg m s−1) before collision 2.00 0.00 2.0
after collision
kinetic energy (J) before collision 2.00 0.00 2.0
after collision
velocity / m s−1
time / s
10
5
0
−5
−10
2
4
6
1 2 3
0 3
1 2 3
–3 0 3