1
potential energy
2
energy transfer
3
design solution
4
kinetic energy
5
investigate
6
restraint
7
collision
8
pendulum
9
solution
10
need/want
11
vehicle
12
outcome
13
energy
14
launcher
15
forces
16
angle
17
pitch
15
12
10
2
4
9
5
3
1
14
11
7
17
16
13
6
8
