Carol and juan were playing with carol's new train set. they pushed the trains around the track. they tried four different
sections of track. the train had the slowest speed on which section of track?

a) track 1
b) track 2
c) track 3
d) track 4

Speed (m/s) = distance (metres) ÷ time (seconds)

For Track 1: 0.2 ÷ 2 = 0.1m/s

For Track 2: 0.2 ÷ 2 = 0.1m/s

For Track 3: 0.6 ÷ 6 = 0.1m/s

For Track 4: 0.4 ÷ 6 = 0.07m/s

The train on Track 4 had the slowest speed because it's got the shortest speed and it's covering less distance per second therefore it is slower.

b is the correct answer

mark me brainliest and hope this

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.