PH2100 Final exam PRACTICE #2 Spring 2023_ PH2100 0A and 0B Spring 2023 - Combined Section

.pdf

School

Michigan Technological University *

*We aren’t endorsed by this school

Course

2100

Subject

Physics

Date

Jan 9, 2024

Type

pdf

Pages

Uploaded by CommodoreHawk3830

4/20/23, 12:43 PM PH2100 Final exam PRACTICE #2 Spring 2023: PH2100 0A and 0B Spring 2023 - Combined Section https://mtu.instructure.com/courses/1440141/quizzes/2541052 1/21 PH2100 Final exam PRACTICE #2 Spring 2023 Due No due date Points 0 Questions 30 Time Limit None Instructions Attempt History Attempt Time Score LATEST Attempt 1 less than 1 minute 0 out of 0 Submitted Apr 20 at 12:43pm This OPTIONAL exam contains 30 questions as will your final exam. It is recommended that you limit yourself to 2 hours and use only the formula sheet in your initial attempt to simulate exam conditions. But you are welcome to repeat the exam as many times and in whatever ways you wish. 0 / 0 pts Question 1 Unanswered Unanswered Two children (Ann and Bob) have a footrace. A motion diagram of this race is shown in the figure below. All motion is from left to right with a time of one second between each successive location image. Ann and Bob start the race together at the same time and place (x = 0 m). What is Bob’s displacement after the first four seconds of his motion? Zero

4/20/23, 12:43 PM PH2100 Final exam PRACTICE #2 Spring 2023: PH2100 0A and 0B Spring 2023 - Combined Section https://mtu.instructure.com/courses/1440141/quizzes/2541052 2/21 15 m 25 m 30 m orrect Answer orrect Answer 35 m 0 / 0 pts Question 2 Unanswered Unanswered People walking through an airport can walk on a "moving walkway" to cover distance more quickly. Suppose the walkways have a speed of 2.5 m/s. Consider a person who can walk at a speed of 1.5 m/s and run at a speed of 3.5 m/s on an unmoving floor. Suppose the person walks forward along a 100 m long walkway, then turns around and runs 100 m back (opposite the direction of the walkway's movement). How long will this round trip take? 25 seconds 44 seconds 80 seconds 125 seconds orrect Answer orrect Answer 133 seconds 0 / 0 pts Question 3 Unanswered Unanswered An object moving along a straight, horizontal path has its velocity described by the function v(t) = 2.00 t, where the velocity has units of

4/20/23, 12:43 PM PH2100 Final exam PRACTICE #2 Spring 2023: PH2100 0A and 0B Spring 2023 - Combined Section https://mtu.instructure.com/courses/1440141/quizzes/2541052 3/21 meters per second for time (t) given in seconds. What is the object’s acceleration when t = 5.00 s? 10.0 m/s/s 2.00 m/s/s orrect Answer orrect Answer Zero -2.00 m/s/s -10.0 m/s/s 0 / 0 pts Question 4 Unanswered Unanswered The figure below shows a velocity-versus-time graph for the motion of an object as it moves along an x-axis. The location of the object is at x = 0 meters when t = zero. What is the object’s location when t = 20 s? 0 0 60 m 40 m 25 m orrect Answer orrect Answer

4/20/23, 12:43 PM PH2100 Final exam PRACTICE #2 Spring 2023: PH2100 0A and 0B Spring 2023 - Combined Section https://mtu.instructure.com/courses/1440141/quizzes/2541052 4/21 15 m 2.0 m 0 / 0 pts Question 5 Unanswered Unanswered If A= 2.00î + 1.00ĵ and B= 1.00î - 2.00ĵ , then what is the magnitude of the vector ? 3.00 4.00 5.00 orrect Answer orrect Answer 7.00 9.00 The following information applies to the next two questions (6 and 7). A battleship simultaneously fires two shells at two different ships as shown in the figure below. The shells follow the shown trajectories with the height reached by trajectory A being higher than trajectory B. Both shells are fired from the same location, and return to the same height (y=0) when they hit the ships. Assume that the trajectories of the shells are well described by projectile motion.

4/20/23, 12:43 PM PH2100 Final exam PRACTICE #2 Spring 2023: PH2100 0A and 0B Spring 2023 - Combined Section https://mtu.instructure.com/courses/1440141/quizzes/2541052 5/21 0 / 0 pts Question 6 Unanswered Unanswered Suppose that the shell following trajectory A was fired with a speed of 833 m/s at an angle of 60.5° above horizontal. What is the shell’s height in meters (with respect to its firing location) when it reaches the peak of its trajectory? (Enter your answer to the nearest whole number to avoid rounding error.) ou Answered ou Answered 26,818 margin of error +/- 1% orrect Answer orrect Answer 0 / 0 pts Question 7 Unanswered Unanswered Which statement below is correct ? Ship A is hit first by a shell Ship B is hit first by a shell orrect Answer orrect Answer Ship A and Ship B are hit simultaneously

4/20/23, 12:43 PM PH2100 Final exam PRACTICE #2 Spring 2023: PH2100 0A and 0B Spring 2023 - Combined Section https://mtu.instructure.com/courses/1440141/quizzes/2541052 6/21 Not enough information is given to determine which ship is hit first 0 / 0 pts Question 8 Unanswered Unanswered A spinning disk goes steadily from rest to 2.00 revolutions per second in 4.00 seconds. What is the magnitude of the radial acceleration experienced by a point on the disk that is 0.250 meters from the spin axis when t = 4.00 s? 4.00 m/s/s 6.20 m/s/s 16.0 m/s/s 39.5 m/s/s orrect Answer orrect Answer 158 m/s/s The following information applies to questions 9 and 10. Generic Person pushes a crate up a ramp inclined at 30.0° as shown in the figure below. The coefficient of kinetic friction between the block and the ramp is 0.20. The mass of the crate is 50.0 kg. The crate and Generic Person are moving up the ramp with a constant speed.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version