4 A hobbyist collected data about the motion of a toy train on a straight track and then recorded the data in the graph below.
Motion of a Toy Train
6
5
4
Distance from
Starting point
(w)
2
1
0
2
4
6
Time
NOSSO
Which of these accurately describes the motion of the toy train?

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.