5 Written Questions

1. Opposite directions at the same speed.
2. Yes, constant speed without friction
3. Initial
   Final
4. The mass of an object
5. a measure of how far an object has moved.

5 Matching Questions

1. An object changing its speed from 12 m/s to 5 m/s is undergoing what kind of acceleration?
2. Acceleration is.....
3. As a car slows down approaching a red traffic light its_______________________ is negative.
4. What does a horizontal line on a velocity/time graph show?
5. In the equation a=(vf-vi)/t, Vf stands for what?

1. a The rate of change of velocity
2. b Negative
3. c Final velocity
4. d zero acceleration
5. e acceleration

5 Multiple Choice Questions

1. greater than
   1. Why is it necessary to wear a seat belt to hold you in place if you are riding in a car that stops suddenly?
   2. If you ride your bicycle down a straight road 2 miles and then turn around and ride back, your distance is __________________________ your displacement.
   3. Relate distance, speed, and time in an equation.
   4. Why does an object moving at a constant speed have velocity?
2. mass (inertia)
   1. What does a horizontal line on a velocity/time graph show?
   2. Two cars are trafveling along the same road at the same speed, but different velocities. Explain.
   3. Why does an object moving at a constant speed have velocity?
   4. At the same speed, a bowling ball is harder to stop than a soccer ball because the bowling ball has greater......
3. Speed
   1. What does the slope of the distance-time graph give?
   2. Relate distance, speed, and time in an equation.
   3. 3 m/s north is an example of what?
   4. What does a horizontal line on a velocity/time graph show?
4. Balanced forces
   1. Acceleration occurs when an object changes its_______________________ or ________________________ or both.
   2. Why does an object moving at a constant speed have velocity?
   3. As a car slows down approaching a red traffic light its_______________________ is negative.
   4. If the forces acting on an object at rest are ________________________, the object wll remain at rest.
5. If not, you will continue moving forward at the car's original speed.
   1. What is another name for Newton's first law of motion?
   2. Why is it necessary to wear a seat belt to hold you in place if you are riding in a car that stops suddenly?
   3. Why does an object moving at a constant speed have velocity?
   4. What does a horizontal line on a velocity/time graph show?

5 True/False Questions

1. Motion is...... → The speed and direction with which an object moves.

   True        False

2. Velocity is..... → The speed and direction with which an object moves.

   True        False

3. Acceleration occurs when an object changes its_______________________ or ________________________ or both. → Velocity (speed)
   
   Direction

   True        False

4. Why does an object moving at a constant speed have velocity? → zero acceleration

   True        False

5. A skater in a parking lot. Can she have a constant speed and changing velocity? Can she have a changing speed and constant velocity? Explain your answer. → Because it's changing direction.

   True        False