D Question 8 0.37 pts Consider the same case as in the previous problem, but now we have doubled the angle so that the ramp is steeper. The ramp is still frictionless, the hand still pushes parallel to the incline with a constant force of magnitude F0, and the block begins with the same initial velocity v0. The block travels up the same vertical distance H, as before. VV H Consider the system of the block only. The magnitude of the work done by gravity on the block is ______________ the work done by gravity on the block in the previous problem (with the original incline). O greater than 0 less than 0 equal to 0 (there is not enough information provided to answer) Question 9 0.37 pts If the original experiment with the less-steep ramp is now conducted so that the initial speed is twice as large as in the original experiment (2v_0 in this new experiment), the work done by gravity in this experiment will be _________ compared with the original experiment. 0 greater than 0 less than 0 equal to O impossible to judge the magnitude Question 10 0.38 pts For the following questions, consider a student lifting a book upwards a distance d with constant velocity. The work the student does on the book 0 is positive. 0 is negative. 0 is zero. 0 has a sign which cannot be determined with the given information. D Question 11 0.37 pts What is the total work on the book? OO O -mgd Omgd O D Question 12 0.37 pts The change in kinetic energy of the book ____ depend on the choice of system. O does does notQuestion 13 0.37 pts If you chose the system of the book only, the change in kinetic energy of the book 0 is positive. 0 is negative. 0 is zero. 0 cannot be determined. Question 14 0.37 pts If you chose the system of the book and earth, the change in kinetic energy of the book 0 is positive. 0 is negative. 0 is zero. 0 cannot be determined. Question 15 0.37 pts For the following questions, imagine the book drops in free fall and falls a distance d For the system of the book and earth, the change in total energy of the system if the book falls a distance d O is positive. 0 is negative. 0 is zero. 0 has a sign which cannot be determined. Question 16 0.37 pts For the system of the book and earth, the net work done on the system by external forces as the book falls a distance d is O is positive. 0 is negative. 0 is zero. 0 has a sign which cannot be determined. Question 17 0.37 pts For the system of the book only, the change in total energy of the system if the book falls a distance d O is positive. 0 is negative. 0 is zero. 0 has a sign which cannot be determined. Question 18 0.37 pts For the system of the book only, the net work done on the system by external forces as the book falls a distance d is O is positive. 0 is negative. 0 is zero. 0 has a Sign which cannot be determined. Question 19 0.37 pts Which of the following physical principles always holds true to the best of our current scientic understanding, regardless of the choice of system? C] The law of conservation of energy E] The work-energy theorem 0.37 pts D Question 20 Read the explanation packet for Tutorial 6 to help answer the following questions (Course Materials ). Use dimensional analysis and the definition of momentum for our class to determine the SI units of momentum in base units. 0 m/s 0 m/s2 kg m/s - kg m/s2 ONQuestion 21 0.37 pts You have a system of two objects, both of which are 1kg. One moves with a velocity of 5 m/s in the positive y-direction. The second moves with a velocity of 3 m/s in the positive y-direction. What is the magnitude of the total momentum of the system (assume SI units)? 0 5 O 3 O 8 Q 2 O a number greater than 5 but less than 8 O a number less than S but greater than 3 Question 22 0.37 pts Select all correct statements of Newton's Second Law. C] Force equals mass multiplied by acceleration C] Force equals mass multiplied by velocity C] Force equals mass multiplied by change in velocity C] Force equals the change in momentum C] Force equals the rate of change of momentum (in time) Question 23 0.37 pts The denition of impulse says impulse is the integral of a force over time. Since force is a vector, impulse must be a C] vector C] scalar C] integer C] No answer text provided. Question 24 0.37 pts An object of mass 1 kg is traveling with a constant speed of 10 m/s in the positive x-direction. Consider case 1 in which the object above comes to a stop in 1 second. Consider case 2 in which the same object comes to a stop in 10 seconds instead of 1 second. Which case had the bigger change in momentum? 0 case 1 0 case 2 0 both cases have the same change in momentum 0 it cannot be determined Question 25 0.37 pts In the setup from the last question, which case had the bigger impulse? 0 case 1 0 case 2 0 both cases have the same impulse 0 it cannot be determined Question 26 0.37 pts Net force on a system is equal to the ___________ of the system. C momentum [: acceleration impulse rate of change of momentum rate of change of acceleration change in momentum