1. Motion Unit Benchmark
Study Guide

2. How to calculate density D=m/V
Key Concepts
How to calculate density D=m/V

3. What determines inertia?
Key Concepts
What determines inertia?

4. Characteristics of each state of matter
Key Concepts
Characteristics of each state of matter

5. How is speed calculated? How is velocity calculated?
Key Concepts
How is speed calculated?
How is velocity calculated?

6. How does mass affect the rate at which an object falls?
Key Concepts
How does mass affect the rate at which an object falls?
In the absence of air resistance?

7. Key Concepts
Compare forces: which way will an object move? What determines weight? Is it a force? Know how to calculate weight

8. How could you measure/test the force of friction?
Key Concepts
How could you measure/test the force of friction?
Why is gravity less on the moon?

9. Be able to calculate acceleration
Key Concepts
Be able to calculate acceleration
Know Newton's laws and examples of each

10. Practice Problems
What is the density of a cube of ice that has a mass of 45g and a volume of 2cm3 ?

11. Determine the density of a sample of copper that has a mass of 50
Determine the density of a sample of copper that has a mass of 50.36g and a volume of 5.64cm3

12. If a block of wood has a density of 65 g/cm3 and a mass of 15g, what is the volume of the block?

13. If a car has a force of 10N pushing it backwards and a force of 20N pushing it forwards, in which direction will the car move?

14. In the absence of air resistance, which object will fall at the fastest rate when dropped?
75kg
10kg B
25 kg

15. An airplane in level flight is acted on by 4 basic forces, Thrust pushing forward, Lift pushing upward, Weight pushing down, & Drag from air resistance. In level flight at constant speed, which pair of forces must be equal.

16. A student wants to test a hypothesis that frictional forces are independent of the area of contact between the block and the surface it slides on. Which would be the best method to collect data?

17. Pulling the block across the same surface10 times, adding weight each time
Pulling the block across 10 different surfaces only on one side.
Pulling the block across the same surface with a different side in contact each time
Pulling the block across 3 different surfaces with a different side in contact each time.

18. The weight of a person on Earth is 6 times his or her weight on the Moon. What type of force is responsible for the person’s weight?

19. What is the weight of a 600kg car on the moon is the force of gravity on the moon is 2.4m/s2 ?

20. If a hot air balloon is flying past clouds at a velocity of 5km/hr north relative to the clouds. The clouds are moving past the ground at a velocity of 3.5 km/hr north. How fast is the balloon going?

21. There are 2 sets of blocks that are the same distance apart
There are 2 sets of blocks that are the same distance apart. Which set of blocks has a greater gravitational force between them? Why?
1 kg and 1 kg
2 kg and 2 kg

22. What is the unbalanced force acting on a truck that has a mass of 125kg accelerating at 35m/s2 ?

23. Which statement about the weight of an object is true?
It is determined by the force of gravity
It is the object’s mass
The weight and mass of an object are equal
An object’s weight is not related to its mass

24. What is the tendency for an object at rest to remain at rest
What is the tendency for an object at rest to remain at rest? Which of Newton's laws describes this tendency?

25. In which state of matter are the particles moving rapidly and spread out freely?
In which state of matter do the particles take the shape of their container?
In which state of matter do the particles vibrate around a fixed position?