You encounter a moving walkway that is 75 mm long and has a speed of 1.9 m/sm/s relative to the ground. How long would it take you to cover the 75 mm length of the walkway if, once you get on the walkway, you turn around and start walking in the opposite direction with a speed of 1.4m/s relative to the walkway?

You encounter a moving walkway that is 75 mm long and has a speed of 1.9 m/sm/s relative to the ground. How long would it take you to cover the 75 mm length of the walkway if, once you get on the walkway, you turn around and start walking in the opposite direction with a speed of 1.4m/s relative to the walkway?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter39: Relativity

Section: Chapter Questions

Problem 3PQ

See similar textbooks

Similar questions

The truck in Figure P39.1 is moving at a speed of 10.0 m/s relative to the ground. The person on the truck throws a baseball in the backward direction at a speed of 20.0 m/s relative to the truck. What is the velocity of the baseball as measured by the observer on the ground? Figure P39.1
A landscape architect is planning an artificial waterfall in a city park. Water flowing at 1.70 m/s will leave the end of a horizontal channel at the top of a vertical wall h = 2.35 m high, and from there it will fall into a pool (Fig. P3.42). (a) Will the space behind the waterfall be wide enough for a pedestrian walkway? (b) To sell her plan to the city council, the architect wants to build a model to standard scale, which is one-twelfth actual size. How fast should the water flow in the channel in the model? Figure P3.42
A 238U nucleus is moving in the x direction at 5.0×105 m/s when it decays into an alpha particle (4He) and a 234Th nucleus. If the alpha particle moves off at 22 degrees above the x axis with a speed of 1.1×107 m/s, a) What is the speed of the thorium nucleus and b) What is the direction of the motion of the thorium nucleus ( degrees clockwise from the x axis)?
You encounter a moving walkway that is 81 m long and has a speed of 2.1 m/s relative to the ground. How long would it take you to cover the 81 m length of the walkway if, once you get on the walkway, you immediately turn around and start walking in the opposite direction with a speed of 1.6 m/s relative to the walkway? Express your answer using one significant figure.
A starship blasts past the earth at 2.0 x 108 m/s. Just after passing the earth, the starship fires a laser beam out its back. With what speed does the laser beam approach the earth?
Arthur and Betty start walking toward each other when they are 100 m apart. Arthur has a speed of 3 m/s and Betty has a speed of 2 m/s. Their dog, Spot, starts by Arthur's side at the same time and runs back and forth between them at 5.0 m/s. By the time Arthur and Betty meet, what distance has Spot run? (in meters)
The velocity of a particle which moves along S-axis is given by V=2-4t+5t^(3/2) where t is is second and V is in m/s. The particle is at the position s=3m when t=0. a) Compute the position S when t=3sec .b) Compute the velocity of the particles when t=3sec. C)Compute the acceleration when t=3sec.
Victoria is standing on a boat, during a perfectly calm day. Initially, both are not moving. Then Victoria walks from one end of the boat to the other. Take the initial time to be before she walks and the final while still walking. b) Compare the final speed of the boat with Victoria’s final speed. Are they the same or different? Why?
The moon is about from Earth. Traveling at the speed of light, m/s, how long does it take a laser beam to go from Earth to the Moon and back again? The same physics was responsible for the noticeable delay in communication signals between lunar astronauts and controllers at the Houston Space Flight Center.
The motion of a particle moving in space from t=0 to t=4 seconds is defined by the following velocities: Vx=2t2, Vy=4-t2, Vz=8t. What is the total distance traveled by the particle after 4 seconds in meters? answer: 81 meters Explain every process.
An ultrasound doppler meter is used to detect motion for an alarm system. The unit emits an ultrasound signal and its echo is detected back at the same unit. If the unit emits a frequency of 100 MHz and is only able to detect a change in frequency of the reflected sound greater than 8.0 kHz, what is the maximum speed that an intruder can travel at relative to the unit whilst remaining undetected? Take the speed of sound in air to be 343 m/s. 6.0 cm/s 2.0 cm/s 1.0 cm/s 12cm/s 1.4 cm/s 2.7 cm/s agonal crystalline growth in the s from the normal of the first icular to the plane of the page he refractive index of the efractive index of the ng ray most closely represents
An ultrasound doppler meter is used to detect motion for an alarm system. The unit emits an ultrasound signal and its echo is detected back at the same unit. If the unit emits a frequency of 100 MHz and is only able to detect a change in frequency of the reflected sound greater than 8.0 kHz, what is the maximum speed that an intruder can travel at relative to the unit whilst remaining undetected? Take the speed of sound in air to be 343 m/s. 6.0 cm/s 2.0 cm/s 1.4 cm/s 2.7 cm/s 12 cm/s 1.0 cm/s 24 O A stv MacBook Air