# Science Unit 3 Force and Motion.

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Science Unit 3 Force and Motion

1. Identify the situation in which no work is being done.
The boy lifts the box above his head. The boy tosses the box into the truck. The boy pushes the box up a ramp. The boy pushes on the wall.

2. Identify a situation below in which work is being done.
F. Turning a page in a science book G. Reading a science book H. Resting a science book against the wall J. Holding a science book

3. In a germinating seed, the downward growth of roots and upward growth of leaves and stems are the plant’s responses to – Sunlight Gravity Osmosis Water

4. What evidence proves that no work is being done on an object?
F. An object does not move from one point to another G. An object moves from one point to another H. An object has mass J. An object has volume

5. What caused the behavior of the plant in the diagram above?
Response to gravity Negative homeostasis Excessive humidity Lack of turgor pressure

6. A batter walks up to the home plate with his bat, stands with his bat in the air, swings his bat, and makes contact with the ball. In which part of this situation is no work occurring? F. Batter walks up to the home plate with his bat G. Batter stands with his bat in the air H. Batter swings the bat J. Batter makes contact with the ball

7. How much work is done if a force of 2 N is used to move a box 4 m?
0.5 Nm 2 Nm 6 Nm 8 Nm

8. Using the above graphic, who is doing more work to move the barrel into the truck? F. The man using the short ramp is doing more work. G. The man using the long ramp is doing more work. H. They are both doing the same amount of work. J. There is not enough information provided.

9. Two containers were delivered to the office
9. Two containers were delivered to the office. The mass of one container is 4.0 kg, while the other is 2.5 kg. Which of the following situations demonstrates work being done? A person is standing and holding the 2.5 kg container. A person is holding the 4.0 kg container above their head. A person is lifting the 2.5 kg container from the floor to the table. A person is holding the 4.0 kg container while sitting in their seat.

10. Two workers are using ramps to load barrels into two identical trucks. One worker is using a short ramp, while the other is using a long ramp. Who has to use more force to move the barrel into the truck? F. The man using the short ramp has to use more force. G. The man using the long ramp has to use more force. H. They are both using the same amount of force. J. There is not enough information provided.

11. A student was asked to set up an experiment to determine how the angle of a ramp affects the amount of force needed to move a 1 kg object. Which of the following pieces of equipment would the student use for the experiment? A. I, II, and V B. I, III, and V C. I, II, III, and V D. I, III, and IV

F. goggles G. gloves H. apron and goggles J. goggles and gloves
12. A student was asked to set up an experiment to determine how the angle of a ramp affects the amount of force needed to move a 1 kg object. Which of the following pieces of safety equipment should be used for the experiment? F. goggles G. gloves H. apron and goggles J. goggles and gloves

13. A student was asked to set up an experiment to determine how the angle of a ramp affects the amount of force needed to move a 1 kg object. Which of the following data tables would be most appropriate for collecting the data?

14. A moving service is delivering boxes to a warehouse
14. A moving service is delivering boxes to a warehouse. The workers used 15.3 N of force to move a box 17 meters across the floor. Calculate the work being done on the box. Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

15. A student was asked to set up an experiment to determine how the angle of a ramp affects the amount of force needed to move a 1 kg object. The data for the experiment follows. When the ramp was set at 90 degrees, it took 10 N of force to move the 1 kg object. When the ramp was set at 60 degrees, it took 8.6 N of force to move the 1 kg object. When the ramp was set at 30 degrees, it took 5 N of force to move the 1 kg object. What conclusion can be made from the above data?