How Long Did the 23m Jump Last?

[svtec]

Question: A man is jumping into a river that is 23.0m below a bridge.

1. how long does the jump last?
answer: 2.17 seconds
2. how fast was the diver traveling upon impact with the water?
answer: 21.2 m/s
3. If the speed of sound in air is 340 m/s, how long after the diver took off did a spectator on the bridge hear the splash?
answer: 2.24 seconds

TIA...



-andrew

 

[HallsofIvy]

Yes, those answers are correct. Is that what you wanted?

 

[svtec]

thanks... i was just checking because i suck at physics.[b(]

i don't have any answers in the back of the book and our homework is worth almost a quarter of our grade.

physics for scientists and engineers = hard.


-andrew