Study Guide for the 1^st Examination

Tips:

• In the chapter summaries read the Useful Concepts and be familiarized with the terminology from the Important Terms list.
• Work out ALL the Practice Problems
• Start studying at least 1 week prior to the exam.
• Read the chapters thoroughly
• Take good and legible lecture notes
• Take breaks between studying time

1. One liter (L) is a volume of 10³ cm³ . How many cubic centimeters are in 5 milliliters

 

2. A.) Express 70 miles/hour in units of km/hour.  B.) In units of m/s.

 

3. What is the area in square centimeters of an 11" x 17" piece of paper?

 

4. What is the volume of a right circular cylinder with a radius of 4.17 cm and a length of 12cm?

A.) 650 cm³

B.) 660 cm³

C.)        670 cm³

D.)        700 cm³ 

5. The speed limit on many highways is 65 mph. What is this speed limit written in fps (feet-per-second).

A.) 75 fps

B.) 85 fps

C.) 95 fps

D.) 125 fps

6. Vectors may be added graphically by placing them

A.) tail to tail

B.) parallel

C.) head to tail

D.) head to head

7. Find the components of the vector A=5 cm,  angle= 30 degrees.

8. Which is not an example of a vector?

A.) Force

B.) Volume

C.) Displacement

D.) Velocity

9. A proton starts from rest and accelerates at 5.0 x 10¹² m/s² for a time of 2.0s(Micro-seconds 10^-6).  What is its final velocity?

A.) 1.0 x 10⁷ m/s

B.) 1.25 x 10⁷ m/s

C.) 2.0 x 10⁶ m/s

D.) 2.25 x 10⁶ m/s

10. The slope of the velocity versus time curve for a body is that body's ___________ acceleration.

A.) Minimum

B.) Instantaneous

C.) Initial

D.) Average

11. A boat capable of traveling 10 km/hr in still water is crossing a river near the ocean that is flowing at 5.0 km/hr. The river is 0.80 km wide at this point. The boat captain wishes to land at a point 0.90 km upstream. Assuming the captain steers on a shortest distance path, how long does the trip take?

A.) 0.21 h

B.) 0.25 h

C.) 0.29 h

D.) 0.33 h

12. An observer determines that a line from her eyes to the top of a tree makes an angle of 24 above the horizontal. She measures the horizontal distance to the tree and finds it to be 62 m. If her eyes are 1.5 m above the ground, what is the height of the tree?

A.) 29 m

B.) 18 m

C.) 11 m

D.) From this information the height of the tree cannot be calculated

13. A soccer ball is kicked at 20 m/s at an angle of 40 above the horizontal.

a.) calculate the components of the initial velocity

b.) calculate the total time the ball is in the air

c.) calculate the maximum height the ball reaches.

14. When an object is sitting on a table at rest, the force produced by the table is perpendicular and just the amount needed to balance gravity. This force is called the _______ force.

A.) Restoring

B.) Reactance

C.) Tension

D.) Normal

15. If  a box with a mass of 100 kg is being pulled with a force of 500 N at an angle of 30, what is the acceleration of the system. Assuming the surface is frictionless.

A.) 5.0 m/s²

B.) 4.3 m/s²

C.) 3.4 m/s²

D.) 1.0 m/s²

16. A rocket has a mass of 4.5 x 105 kg. What force is necessary to give it an acceleration of 8.1 m/s2?

A.) 5.55 x 10⁴ N

B.) 3.65 x 10⁶ N

C.) 4.41 x 10⁶ N

D.) 3.65 x 10⁵ N

17. What is the minimum force required to push an 80 kg carton up an incline of 25 of the coefficient of friction between the incline and the box is 0.70 and if the force is applied upward at an angle of 20 with respect to the horizontal?

A.) 8.1 x 10² N

B.) 8.4 x 10² N

C.) 7.6 x 10³ N

D.) 7.9 x 10³ N

18. Consider the system shown. The incline plane is frictionless.

a.) Calculate the acceleration of the system.

b.) Calculate the tension in the cord.

19. Calculate the tension in each of the ropes in the figure.

20. Find the acceleration of the system shown. There is negligible friction between the 8 kg object and the horizontal tabletop. The pulley is mass less and frictionless.

21. In the Atwood machine shown, the pulley is mass less and frictionless. What is the acceleration of the system?