Meaning of slam on

1. The driver slammed on the brakes to avoid hitting the deer in the road.
2. I had to slam on the gas pedal to merge onto the highway.
3. The referee slammed on the whistle to stop the play.
4. The teacher slammed on the desk to get the students' attention.
5. I had to slam on the emergency brake to avoid hitting the car in front of me.
6. The singer slammed on the high note to impress the audience.
7. The chef slammed on the heat to quickly cook the vegetables.
8. The police officer had to slam on the siren to clear the way for an ambulance.
9. I had to slam on the mute button to silence the loud commercial on TV.
10. The drummer slammed on the cymbals to end the song with a dramatic finish.