Mark your question with chemistry
Combustion is the burning of a substance. It could be complete or could be incomplete. It changes the form of carbon and so it plays it's role in cycle
Speed. Reaction. Function. Alter.
Answer: 1.8 m/s✔️
Explanation:
She had no force on the system which means that Sheila's bike was thrown down 1.8 m/s ✔️
NOTE: Please make brainlist!