What does this idiom mean: get cracking? Does it mean "hurry up"?

[Rich7]

Test No. incompl/advan-65 "What a Cracker", question 6

For goodness' sake hurry up because if we don't ......... cracking soon we'll miss the bus.

(a) find
(b) get
(c) use
(d) put

Test No. incompl/advan-65 "What a Cracker", answer 6

For goodness' sake hurry up because if we don't get cracking soon we'll miss the bus.

Correct answer: (b) get

Your answer was: correct
_________________________

does this mean "to hurry"?

[Torsten]

Yes, to get cracking means to start to be active or to hurry up.

TOEIC listening, photographs: Fishing at the ocean shore

[Guest]

[Torsten]

Get cracking means hurry up while fire away is an invitation to start asking questions.

TOEIC listening, photographs: In the city