Rank the following quantities in order of decreasing magnitude from largest to smallest: (i) the displacement of the kayak in the frame of boat A, (ii) the displacement of the kayak in the frame of boat B, (iii) the distance between boat A and boat B at time
Want to see the full answer?
Check out a sample textbook solutionChapter 15 Solutions
Tutorials in Introductory Physics
Additional Science Textbook Solutions
Essential University Physics: Volume 2 (3rd Edition)
Essential University Physics (3rd Edition)
University Physics with Modern Physics (14th Edition)
Physics for Scientists and Engineers with Modern Physics
Conceptual Physical Science (6th Edition)
Introduction to Electrodynamics
- An observer sitting on a park bench watches a person walking behind a runner. Figure P4.72A is the motion diagram representing what this observer sees. To better reveal the changing distance between runner and walker, five observations (A through E) are shown on five separate lines in Figure P4.72B. To the observer on the bench, both the runner and the walker move to the right, and the gap between them widens. Draw the motion diagram of the runner from the reference frame of the walker. FIGURE P4.72arrow_forwardA bunch of keys was thrown directly upward by Macoy, who is looking out of the window, to be caught by Len-Len living on a room right above him. Unfortunately, Len-Len wasn't able to catch the keys and therefore the bunch of keys went straight to the ground. If Macoy gave the keys an upward speed of 3 m/s and the keys reached the ground after Macoy threw the keys upward in 4 seconds, c. What is the keys' acceleration when it reached its highest point?d. What is the keys' velocity when it reached its highest point?arrow_forwardPROBLEMS 11.1◆ Speed addition. Darnell stands in a railroad coach that moves at speedc relative to the Earth. He tosses a tennis ball forward at speed c relative to the train. If common sense were correct, the tennis ball would be moving at speed c relative to the Earth. a. How fast does the tennis ball really move relative to the Earth? Darnell stands in a railroad coach that moves at speed c relative to the Earth. He tosses a tennis ball forward at speed c relative to the train. If common sense were correct, the tennis ball would be moving at speed c relative to the Earth. b. How fast does the tennis ball really move relative to the Earth?arrow_forward
- A meter stick is held vertically above your hand, with the lower end between your thumb and first finger. On seeing the meter stick released, you grab it with these two fingers. You can calculate your reaction time from the distance the meter stick falls, read directly from the point where your fingers grabbed it. Q: If the measured distance is 17.0 cm, what is the reaction time?arrow_forwardA certain star is 10.9 light-years away Part A How long would it take a spacecraft traveling 0.930c to reach that star from Earth, as measured by observers on Earth VAX + → Submit X Incorrect: Try Again; 7 attempts remaining Part B Previous Answers Request Answ Submit How long would it take a spacecraft traveling 0.930e to reach that star from Earth, as measured by observers on the spacecraft? 100 ΑΣΦ Request Answer years ? yearsarrow_forwardFour race cars are traveling on a 4.0 kilometer tri oval track. The four cars are traveling at constant speeds of 315 km/h, 305 km/h, 300 km/h, and 290 km/h, respectively. Assume you are an observer standing at a point on the track for a period of 30 minutes and are recording the instantaneous speed of each vehicle as it crosses your point. What is the time mean speed and space mean speed for these vehicles for this time period?arrow_forward
- For the car on a level air track, a student has a video clip that shows the car at positions x₁ = 0.580 m and x2 = 0.692 m in adjacent frames. The video clip was recorded at a frame rate of 15 frames/second. Find the average speed of the car in m/s. Enter the number only, not the unit.arrow_forwardYou're heading an international effort to save Earth from an asteroid heading toward us at 10 km/skm/s. Your team mounts a rocket on the asteroid and fires it for 10 minmin, after which the asteroid is moving at 24 km/skm/s at 25 ∘∘ to its original path. In a news conference, what do you report for the acceleration imparted to the asteroid? Express your answers in meters per second squared. Enter your answers separated by a comma. Assume that the positive xx axis is in the direction of the initial motion of asteroid and yy axis is perpendicular to it.arrow_forwardPart B Constants Denote instantaneous acceleration of this particle by a(t). Evaluate the expression 9 +v(0a()2/2 at t 8t. Note that v(0) and a(0) are the velocity and acceleration at time t 0 The velocity of a particle constrained to move along the x-axis as a function of time t is given by Express your answer to 3 significant figures v(t) (19/to)sin(t/to) View Available Hint(s) Submit Part C Now assume that the particle is at r 0 when t-0, and find its position at t0.13to Express your answer to 3 significant figures Submit Request Answer Part D Evaluate v(0a(0t2/2 at t0.13to to 3 significant figures. Your answers to parts (c) and (d) should be in good agreement. Try to work out why that is so before submitting the answer to part (d) Submit Request Answerarrow_forward
- A remote-controlled car is moving in a vacant parking lot. The velocity of the car as a function of time is given by = [5.00 m/s - (0.0180 m/s³)t²] i + [2.00 m/s + (0.550 m/s²)t]j. v = 7.00 Submit Previous Answers ✓ Correct Part D What is the direction (in degrees counterclockwise from +-axis) of the velocity of the car at t = 6.50 s? Express your answer in degrees. 0₂ = 52.7 ° Submit ✓ Part E a = Previous Answers Correct What is the magnitude of the acceleration of the car at t = 6.50 s? Express your answer with the appropriate units. 0.357 Submit μÀ m S ? Check the units used in your calculation; the numerical value you reached does not appear to have dimensions of acceleration. No credit lost. Try again. Previous Answers Request Answerarrow_forwardIn the projectile motion experiment, a steel ball is rolled down a track starting from a height h above end of the track. The ball flies off of the end of the track and then strikes the floor at some horizontal distance d out from the projection of the end of the track down onto the floor. The apparatus is moved to a different table where the end of the track is now 50% greater than h. How does the new horizontal distance compare to the previous? O The new distance is 1.2 d. O The new distance is 0.7 d. O The new distance is 1.7 d. The new distance is 1.6 d. The new distance is 2.0 d. The new distance is 1.5 d. O The new distance is 1.4 d.arrow_forwardA body moves on a coordinate line such that it has a position s= f(t) = - 41 + 3 on the interval 0sts3, with s in meters and t in seconds. a. Find the body's speed and acceleration at the endpoints of the interval. b When, if ever, during the interval does the body change direction? The body's speeds at the left and right endpoints of the interval are (Type integers or simplified fractions.) m/s and m/s, respectively. The body's accelerations at the left and right endpoints of the interval arem/s and m/s, respectively. (Type integers or simplified fractions.) When, if ever, during the interval does the body change direction? Select the correct choice below and fill in any answer boxes within your choice. O A. The body changes direction at t= (Type an integer or a simplified fraction.) O B. The body does not change direction during the interval. S.arrow_forward
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning