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# Active Physics 2.1 - 2.4 Quiz

1. Objects at rest tend to ________________ at rest. Objects in motion will continue in ___________________ in a straight line at a __________________ speed unless acted upon by an outside ___________________.
2. Using the terms force and friction,explain why you want your bicycle tires to be fully inflated.

3. On this dot timer paper tape draw a vertical line at every 0.1 sec dot.

 .  .  .  .  .  .  .  . .  .  .  . .  .  .  . .  .  .  . .  .  .  . .  .  .  . .  .  .  . .  .  .  .

4. Indicate where the paper tape was moving at a constant speed, speeding up or slowing down.

 .  .  .  .  .  .  .  .  .    .     .      .        .          .         .         .      .    .    .  .  .  .  . . . . . . . . . . . . . .

5. Write ACCEL or DECEL above this paper tape where the tape was accelerating or decelerating.

 .  .  .  .  .  .  .  .  .    .    .      .        .          .        .        .      .    .    .  .  .  .  . . . . . . . . . . . . . . .

6. What does it mean to say that the universe has a speed limit?

7. Mr. Rick drove to Coupeville in 20 minutes. If Coupeville is 12 miles away, what was his average speed? Show your calculations.