Question

Lillian wonders how fast a train can move around a particular curve before it falls off of the track. Which of the following is the best way for Lillian to figure this out?

A.Drive a train along a curve at different speeds until it falls off of the track.
B.Build a model train and track, and test one train going around one curve at different speeds.
C.Build a model train and track, and test one train going around several different curves at one speed.
D.Build a model train and track, and test different-sized trains going around one curve at the same speed.

Answer 1

I would say B.

A, umm, don't crash trains, that's bad.

C, Lillian is wondering how fast a train can go, not at what curve will it fall.

D, Lillian isn't wondering about the size of the trains, just the speed.

Answer 2

Answer: B

Explanation: For Lilian to achieve this she needs to build a model train and track, then test the train going round the curve at different speeds intervals. This would help determine at which speeds the train tends to fall off