Ariana and Gurney are playing a game of catch. Ariana is on a platform 3 meters above Gurney. [NOTE: When answering the questions below, make sure to state your assumptions about the type of motion and how they relate to the equations you choose to use.] a) Gurney throws the ball straight up to Ariana. It leaves his hand moving 10 m/s. The ball reaches a peak height and then comes down and Ariana catches it. What is the peak height reached by the ball?

Ariana and Gurney are playing a game of catch. Ariana is on a platform 3 meters above Gurney. [NOTE: When answering the questions below, make sure to state your assumptions about the type of motion and how they relate to the equations you choose to use.] a) Gurney throws the ball straight up to Ariana. It leaves his hand moving 10 m/s. The ball reaches a peak height and then comes down and Ariana catches it. What is the peak height reached by the ball?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter28: Special Relativity

Section: Chapter Questions

Problem 21CQ: Given the fact that light travels at c, can it have mass? Explain.

See similar textbooks

Similar questions

How fast would a 6.0 m-long sports car have to be going past you in order for it to appear only 5.5 m long?
Given the fact that light travels at c, can it have mass? Explain.
A car traveling at 35.0 m/s takes 26.0 minutes to travel a certain distance according to the drivers clock in the car. How long does the trip take according to an observer at rest on Earth? Hint: The following approximation is helpful: [1x]121+12xforx1.
A car traveling at 35.0 m/s takes 26.0 minutes to travel a certain distance according to the drivers clock in the car. How long does the trip take according to an observer at rest on Earth? Hint: The following approximation is helpful: [1x]121+12xforx1.
(a) Use the distance and velocity data in Figure 3.64 to find the rate of expansion as a function of distance. (b) If you extrapolate back in time, how long ago would all of the galaxies have been at approximately the same position? The two parts of this problem give you some idea of how the Hubble constant for universal expansion and the time back to the Big Bang are determined, respectively. Figure 3.64 Five galaxies on a straight line, showing their distances and velocities relative to the Milky Way (MW) Galaxy. The distances are in millions of light years (Mly), where a light year is the distance light travels in one year. The velocities are nearly proportional to the distances. The sizes of the galaxies are greatly exaggerated; an average galaxy is about 0.1 MlY across.
Describe the shape of the world line on a space-time diagram of (a) an object that remains at rest at a specific position along the x-axis; (b) an object that moves at constant velocity u in the x-direction; (c) an object that begins at rest and accelerates at a constant rate of in the positive x-direction.
Light travels at a speed of about 3 103 m/s. (a) How many miles down a pulse of light travel in a time interval of 0.1 s, which is about the blink of an eye? (b) Compare this distance to the diameter of Earth.
Is Earth an inertial frame of reference? Is the Sun? Justify your response.
A man is running on a straight road perpendicular to a train track and away from the track at a speed of 12 m/s. The train is moving with a speed of 30 m/s with respect to the track. What is the speed of the man with respect to a passenger sitting at rest in the train?
A space probe on the surface of Mars sends a radio signal back to the Earth, a distance of 7.86 107 km. Radio waves travel at the speed of light (3.00 108 m/s). How many seconds does it take the signal to reach the Earth?
(a) At what relative velocity is (b) At what relative velocity is
An Earth satellite used in the Global Positioning System moves in a circular orbit with period 11 h 58 min. (a) Determine the radius of its orbit. (b) Determine its speed. (c) The satellite contains an oscillator producing the principal nonmilitary GPS signal. Its frequency is 1 575.42 MHz in the reference frame of the satellite. When it is received on the Earths surface, what is the fractional change in this frequency due to time dilation, as described by special relativity? (d) The gravitational blueshift of the frequency according to general relativity is a separate effect. The magnitude of that fractional change is given by ff=Ugmc2 where Ug/m is the change in gravitational potential energy per unit mass between the two points at which the signal is observed. Calculate this fractional change in frequency. (e) What is the overall fractional change in frequency? Superposed on both of these relativistic effects is a Doppler shift that is generally much larger. It can be a redshift or a blueshift, depending on the motion of a particular satellite relative to a GPS receiver (Fig. P1.39).