Fundamentals of Mechanics Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. According to Newton's third law of motion- when you lean on a brick wall what is happening?

Question 2 2. In order for an object to move a __________ has to be acted upon it.

Question 3 3. A 1.0 kg ball is thrown against a plastic sheet with a velocity of 10 m/s. The ball hits the sheet and continues in the same direction but with a speed of 5 m/s. What is the impulse of this ball?

Question 4 4. If the following five objects are traveling at the same speed, which one has the greatest momentum?

Question 5 5. If dropped from the same height at the same time, which of the following objects would hit the ground first?

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Question 6 6. What is the rate of acceleration for all objects on Earth?

Question 7 7. In constant-speed circular motion, what is the direction of the centripetal acceleration?

Question 8 8. Which of the following objects are not undergoing centripetal acceleration?

Question 9 9. How many nodes are there in an orbital with l = 4?

Question 10 10. What are the possible values of l for n = 3?

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Question 11 11. The figure below shows a motion diagram. Each dot represents the location of the object during every one second interval (for a total of six seconds). This motion diagram is an example of constant velocity.

Question 12 12. Velocity is a ______quantity, so it has a ______and ______~.

Question 13 13. So as long as your ____ changes you are ________, whether you are speeding up or slowing down.

Question 14 14. Which of the following is NOT directly related to measuring acceleration?

Question 15 15. Any object dropped or thrown near the Earth experiences acceleration due to gravity, a constant value typically measured at which one of the following?

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Question 16 16. During a parachuting outing, I jump from an airplane. When am I experiencing constant acceleration?

Question 17 17. You have a bowling ball weighing 5.4 kg, which you throw at a velocity of 10 m/s. It hits a 3.6 kg ball sitting still in the lane (0 m/s). The bowling balls are made of wet clay, so when they hit, they stick together. Find the velocity of the two balls stuck together after the collision. (hint: The equation for conservation of momentum of an elastic collision is: m{1} * v{1i} + m{2} * v{2i} = m{1} * v{1f} + m{2} * v{2f}).

Question 18 18. The three types of collisions are elastic, perfectly inelastic, and partially inelastic. Assuming the collision is in an isolated system, in which of these three types is momentum conserved?

Question 19 19. What is the formula for acceleration due to gravity?

Question 20 20. Using the formula g = GM/R^2, calculate the acceleration due to gravity near the surface of Jupiter. The mass of Jupiter is 1.898 x 10^27 kg, and the average radius of Jupiter is 6.9911 x 10^7 m. The universal gravitational constant G is 6.67 x 10^-11 N-m^2/kg^2.

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Question 21 21. A hot air balloon works based on Archimedes' principle. If the weight of an entire hot air balloon is 2,227 newtons, then the hot air in the balloon needs to be at least that much lighter than the cool air outside the balloon for it to float. Let's say the balloon is a sphere with a radius of nine meters, and the density of air (at standard temperature and pressure) is 1.2754 kg/m3. What should the weight of the air in the balloon be for it to fly upward?

Question 22 22. Archimedes' principle states that the buoyant force on an object is equal to ______.

Question 23 23. Scissors are a compound machine made up of levers and _____.

Question 24 24. An ax is a compound machine. The handle, like many other compound machines, is a lever. The part that actually does the cutting is the blade which is made of a(n) _____.

Question 25 25. The amount of Force on an object depends on the object's...

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Question 26 26. Which of the following best describes the meaning of impulse?

Question 27 27. What is the name of the scientist who came up with the theory that all objects accelerate toward the ground at the same rate?

Question 28 28. A satellite moves at 8,573 m/s at a radius of 8,500,000 meters from the center of the Earth. What is the centripetal acceleration of the satellite?

Question 29 29. Which of the following sets of quantum numbers is NOT possible?

Question 30 30. The nearest grocery store is ten miles away from your home. You need to buy groceries so you drive from your home to the grocery store then back home. The entire trip took you an hour. What was your velocity for this trip?

Fundamentals of Mechanics Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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