Unit 1 Test Re-looping
If you made below 70 on your unit test and would like to try to raise your grade to a 70, complete the following. It is due before the date of your next unit test.
Step 1:
Visit the website www.physicseh.com, and watch the videos. While watching the videos, take brief notes in the space provided below.
1. Position or Distance Time Graphs Part 2
2. Velocity Time Graphs Part 2
3. Distance to Velocity Time Graph (watch the first 4.5 minutes)
4. Velocity to Distance Time Graph
5. Acceleration Equations Part 1
6. Acceleration Equations Part 2
7. Acceleration Equations Part 3
Notes:
Position or Distance Time Graphs Part 2
Velocity Time Graphs Part 2
Distance to Velocity Time Graph (watch the first 4.5 minutes)
Velocity to Distance Time Graph
Acceleration Equations Part 1
Acceleration Equations Part 2
Acceleration Equations Part 3
Step 2: Complete the following problems. Be sure to include the equations and show all work. Include units and place a box around the answer.
Use the graph to the left to answer questions #1-3 that follow:
1. Give a written description to describe the motion of this object.
2. Explain how you could determine the instantaneous velocity of the object at t = 2 s.
3. Assume the initial velocity was 50 m/s; determine the acceleration of the object.
4. For each of the position vs time graphs shown below, draw the corresponding
v vs t graph.
5. An object that has an initial position of 5 m and an initial velocity of 19 m/s is being accelerated at 1.2 m/s2 for 7.9 s. What is its final position?
6. An object at rest accelerates at 3.7 m/s2 for a distance of 20 m. What is its final velocity?
7. A test car is moving at 15 m/s when it enters a brake test area. It hits the brakes and experiences some acceleration. It comes to a halt in 47 m. What was the acceleration?
8. A girl drops a rock from a bridge into a river 30 meters below. How long does it take to hit the river?
9. A rock falls from a cliff. How fast is it going after 5 seconds?
10. A golf ball is thrown down from a building with an initial velocity of 14 m/s. What is its speed after 3 seconds?
11. You throw a football straight up in the air with an initial velocity of 24 m/s. How high does it get? (Watch your +/- coordinates)
12. A rock falls into the Royal Gorge in Colorado. How far has it gone after 7.5 seconds?
13. A lab car has a position of -3.2 m and an initial velocity of -0.9 m/s. It accelerates at +1.2 m/s2 for a time of 4.8 seconds. What is its final position?
14. A test car is moving at 15 m/s when it enters a brake test area. It hits the brakes and experiences some acceleration. It comes to a halt in 47 m. What was the acceleration?