Single/multi-choice problem: Which of the following solutions is better for the following goal:
What do you use to make rocket powered Matchbox cars?

1. You will need an Estes A10-PT model rocket engine and something to tie the engine to the Matchbox car, and of course a matchbox car.; 2. You will need a rocket engine to attach to the car, a car, and something to hold it all together such as string or wire.;
1.