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1 Hippenmeyer Physics Assessment 1 Your address (khippenmeyer@ncmcs.net) will be recorded when you submit this form. Not khippenmeyer? Sign out * Required 1. Type your first name. * 2. Type your last name. * 3. Choose the block I teach you for science. * Block 1 Block 2 4. If you add up all the time you spent studying, about how long did you study for this test? If you did not study, simply write that you did not study. * 5. True or False. A reference point is used to determine if something is moving or not moving. * True False

2 6. If you are trying to determine if a car is moving, which would be the best choice for your reference point? * the sun a bus that is traveling at a speed of 70 mph a light pole cemented into the ground a bus that is traveling at a speed of 40 mph 7. If an apple is sitting on a teacher's desk, is it moving if you use the desk on which it sits as your reference point? * yes no 8. If an apple is sitting on a teacher's desk, is it moving if you use the sun as your reference point? * yes no 9. Determine if the statement is true or false and choose the correct reason why the statement is true or false. Velocity is the measure of how far you travel in a certain amount of time. * True. Velocity is the word used for speed in the United Kingdom. False. The definition listed for velocity is the definition of speed. Velocity is actually speed in a given direction. True. Velocity is simply another word for speed. They mean exactly the same thing. False. Velocity is how fast you are changing speed every second.

3 10. Acceleration is... * an increase in speed a decrease in speed a change in direction All of the above are classified as acceleration 11. A car is traveling at a speed of 5 mph. The car turns left and is able to a maintain a constant speed of 5 mph. Is the car accelerating? * Yes, the car changed directions. No. A change in direction is not acceleration. Acceleration is an increase in speed. 12. True or False. Anna is riding her bike. She slows down as she approaches a stop sign. This is an example of acceleration. * True False 13. Determine if this paragraph is true or false. Speeding up is a specific type of acceleration, so it has been given another name: deceleration. Deceleration is a type of acceleration. * True False 14. What is the SI unit for force? * Watts Newtons Kilograms Joules

4 15. What is the SI unit for speed? * Nm m/s m/s/s N 16. What is the SI unit for acceleration? * m/s Nm m/s/s N 17. John walked his dog down the rail road tracks along Hwy 5 for a distance of 8.1 miles. It took him and his dog one and a half hours. What was his speed? * 5.4 mi/hr mi/hr 8.1 mi/hr mi/hr 18. A car accelerates from a standstill to 60 m/s in 15 seconds. What is the car's acceleration? * 40 m/s/s 4 m/s/s 40 m/s 900 m/s

5 19. A parachute on a racing dragster opens and changes the speed of the car from 85 m/s to 45 m/s in a period of 4 seconds. What is the acceleration of the dragster? * 100 m/s/s 100 m/s/s 10 m/s/s 10 m/s/s 20. A force of 20 N acts upon a 5 kg block. What is the acceleration of the block? * The block is accelerating at a rate of 100 m/s/s. The block is accelerating at a rate of 4 m/s/s. The block is accelerating at a rate of 5 m/s/s. The block is accelerating at a rate of 10 m/s/s

6 21. What are the two factors that affect the strength of the force of friction? * how hard the surfaces push together and the type of surfaces involved opacity and viscosity the type of surfaces involved and the time of day roughness and albedo 22. Chloe drags a bag of cat food across the floor to the cat bowl. The bag being dragged across the ground is an example of which type of friction? * static friction sliding friction rolling friction fluid friction 23. Mark is on his four wheeler riding in the woods. The wheels coming into contact with the ground as John drives through the woods is an example of which type of friction? * static friction sliding friction rolling friction fluid friction

7 24. Molly jumped out of a plane and released her parachute. The contact between the air and the parachute and the air and Molly are both examples of this type of friction. * static friction sliding friction rolling friction fluid friction

8 25. This is a stack of cars. Which type of friction is there between the red car and the ground? Keep in mind, the car is not moving. It is stationary. * static friction sliding friction rolling friction fluid friction 26. True or False. Total momentum is conserved. * True False

9 27. If the green train car's velocity is 0 m/s and its mass is 2 kg, what is its momentum? * 2 kg x m/s 0 kg x m/s 1 kg x m/s 8 kg x m/s 28. If the total momentum before the crash is 12 kg x m/s, what will the total momentum be after the crash? Use the image below. * 12 kg x m/s 24 kg x m/s 0 kg x m/s 6 kg x m/s

10 29. Which of the following best describes the transfer of momentum? * Part or all of the momentum transfers from the object with the least momentum to the object with the most momentum. Part or all of the momentum transfers from the object with the most momentum to the object with the least momentum. In every example, all of the momentum transfers from the object with the least momentum to the object with the most momentum. In every example, all of the momentum transfers from the object with the most momentum to the object with the least momentum. 30. When you are standing up on a subway train (or bus) and the train (bus) stops suddenly. Your body continues to go forward. Which of Newton's three laws does this example best represent? * Newton's 1st Law of Motion Newton's 2nd Law of Motion Newton's 3rd Law of Motion 31. Which law is best represented by this statement? "Acceleration depends on the object's mass and on the net force acting on the object." * Newton's 1st Law of Motion Newton's 2nd Law of Motion Newton's 3rd Law of Motion 32. A rocket's exhaust pushes against the ground and the ground pushes back on the exhaust of the rocket to propel the rocket upwards. Which of Newton's three laws does this example best represent? * Newton's 1st Law of Motion Newton's 2nd Law of Motion Newton's 3rd Law of Motion

11 33. Your are pushing your 1 year old niece on a swing. Your 5 year old nephew wants to be pushed on the swing next. Since your 5 year old nephew is more massive than your 1 year old niece, you have to apply more force to your nephew so that he accelerates at the same rate as your niece. Which of Newton's three laws does this example best represent? * Newton's 1st Law of Motion Newton's 2nd Law of Motion Newton's 3rd Law of Motion 34. Which law is best represented by this statement? "An object at rest will remain at rest, and an object moving at a constant velocity will continue to move at a constant velocity, unless it is acted upon by an unbalanced force." * Newton's 1st Law of Motion Newton's 2nd Law of Motion Newton's 3rd Law of Motion 35. A swimmer pushes the water back with his/her arms, but the body moves forward. Which of Newton's three laws does this example best represent? * Newton's 1st Law of Motion Newton's 2nd Law of Motion Newton's 3rd Law of Motion 36. Due to the inertia of an object, it is difficult to get an object moving at first. For example, if you are pulling three people in a wagon, the hardest part is getting the wagon rolling. Once you have the wagon rolling along on the road, it is easier. Which of Newton's three laws does this example best represent? * Newton's 1st Law of Motion Newton's 2nd Law of Motion Newton's 3rd Law of Motion

12 37. Which law is best represented by this statement? "If one object exerts a force on another object, then the second object exerts a force of equal strength in the opposite direction of the first object." * Newton's 1st Law of Motion Newton's 2nd Law of Motion Newton's 3rd Law of Motion

13 38. This motion graph represents a person's distance from home. Which statement best describes what the person is doing between C and D? * The person is moving at a constant speed. The person is stopped. The person is getting closer to home. The person is moving further from home.

14 39. This motion graph represents a person's distance from home. Which statement best describes what the person is doing between B and C? * As time passes the person is getting further from home. As time passes, the person's speed is increasing. As time passes, the person is getting closer to home. As time passes, the person's speed is decreasing.

15 40. This motion graph represents a person's distance from home. Which statement best describes what the person is doing between D and E? * The person's speed is decreasing. The person's speed is increasing. The person is getting closer to home. The person is getting further from home.

16 41. This is a distance versus time graph. Sometimes distance is labeled as displacement in a distance versus time graph. During which time frame is the speed NOT constant? * Between 0 and 2 seconds Between 2 and 4 seconds Between 4 and 6 seconds Between 5 and 6 seconds

17 42. This velocity versus time graph represents the motion of a car. During which interval(s) is the vehicle stopped? * Between B and C & between D and E & between F and G Between B and C & between F and G Between B and C Between D and E

18 43. True or False. Between 16 seconds and 21 seconds, the car's speed is increasing. * True False

19 44. True or False. Between 16 seconds and 21 seconds, the car's acceleration is increasing. * True False

20 45. This velocity versus time graph represents the motion of a car. Complete the following sentence: Between B and C, the car is * moving at a constant rate of 10 m/s. slowing down. speeding up. stopped.

21 46. True or False. The car is accelerating between A and B. * True. The car's speed is increasing. False. The car's speed is constant.

22 47. What is the net force? Is this an example of an unbalanced or balanced force? * net force: 600 N unbalanced force net force: O N unbalanced force net force: 600 N balanced force net force: O N balanced force 48. What is the net force? Is this an example of an unbalanced or balanced force? * net force: 700 N unbalanced force net force: 100 N unbalanced force net force: 700 N balanced force net force: 100 N balanced force

23 49. What is the net force? Is this an example of an unbalanced or balanced force? * net force: 0 N unbalanced force net force: 0 N balanced force net force: 900 N unbalanced force net force: 900 N balanced force Powered by

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