Watch the tennis ball bounce from the force meter!
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Bounce of a tennis ball
Bounce of a tennis ball
nauk (from original by Peter Gabrovec)
srednja težka
20-45 min
Tennis ball
Graph of position vs. time
Which graph correctly represents how the position of the ball changes with time?
Pravilen odgovor: A
Graph of position vs. time
The graf disolays measurment results for position vs. time. Does your prediction agree with it?
| Your prediction: |
You are doing well. We can proceed!
Your prediction does not agree with the measurement data. Choose the graph that best agrees with them.
It is true that the graphs do not exactly coincide. But, qualitatively their shape is similar enough, and they agree in all of the basic carachteristics so that we can say that they match.
Unfortunately, even in the second attempt you failed to pick the correct graph. The correct choice would have been.
Velocity
Determine the velocity of the ball before and after the impact. Write the respsctive answers below!
Velocity before impact: m/s.
Vlocity after impact: m/s.
Namig glede računanja: zaradi odstopanj posameznih odčitanih vrednosti je bolje vzeti pri računu hitrosti daljši časovni interval (seveda pa ne tolikšen, da bi že zajemal odboj), sicer lahko dobimo precejšna odstopanja.
The answer is still incorrect.
The velocity before impact is m/s,
The velocity after impact m/s.
The answer is not entirely correct. The sign of the velocity is important!
Congatulations! Both answers are correct.
Unfortunately, the answer is not correct. Retry and pay attention to the units..
