A girl standing on the sidewalk observes a car passing by. Someone sitting in the car throws a box outside at a speed of 3m/s in the direction that the car is going. If the car is moving at 28m/s, what speed will the girl on the sidewalk observe the box moving at ?

Q: A man standing at a window 6 meters tall watches a falling stone pass by the window in 0.413 secs.…

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Q: Bob shines a powerful laser beam from his deep space station out into space. Alice pursues the beam…

A: Required : Speed of the laser.

Q: They stick together and move at what speed?

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Q: A spaceship is moving away from Earth at 0.900c when it fires a small rocket in the forward…

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Q: An airplane is moving with respect to the earth at a speed of 600 m/s. Its proper length is 50 m. By…

A: Proper length of airplane Lo=50 m and velocity of plane 600 m/s.  We need to find the length of the…

Q: The crew of an enemy spacecraft attempts to escape from your spacecraft by moving away from you at…

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Q: . June and Miko are 21 years old when June leaves to travel in outer space. June's space ship…

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Q: You are on a train platform and a train, traveling at 10 mph, passes by you moving to the right. A…

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Q: A 100 m long steel beam is moving past the Earth. Observers on the Earth actually measure the steel…

A: Given data :- actual length L0 = 100 m apparent length L = 50 m

Q: You watch a spaceship go past you at nearly the speed of light. The length of the spaceship that you…

A: If we measure the length of anything moving relative to our frame, we find its length L to be…

Q: The sidewalk is 50.0 m long and is moving at 1.25m/s. How long will it take a passenger walking at…

A: Given data: Length of sidewalk is, d=50.0 m. Speed during side walk is, v1=1.25 m/s. Speed of…

Q: 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…

A: Given data The actual length is, Lo=6.0 m The appeared length is L=5.5 m The appeared length by…

Q: A particle traveling at 2.25 x 10^8 m/s is subjected to the special theory of relativity. How fast…

A: Given data:  Speed of particle (v) = 2.25×108 m/s Required: Velocity of the particle in relation to…

Q: A pregnant woman experiences labor pains, so the husband decided that she will be brought to the…

A: Given Data : The distance of the wife from the hospital is given as d = 70 Km. The speed of the car…

Q: You are flying on a plane. Your friend is on the ground. The lights on the wing of the plane blink…

A: The friend is on ground and the person is on a airplane.  The lights on the wing of plane blink at…

Q: A man moves on ground with a speed of 2ms-1 towards a train moving towards him with 40ms-1 on…

A: Train is moving in the opposite direction of person.

Q: A spaceship is moving away from Earth at 0.842c when it fires a small rocket in the forward…

A: Spaceship is moving away from earth at speed u=.842cSmall rocket move forward with speed relative to…

Q: You are on a train platform and a train, traveling at 10 mph, pass by you moving to the right. A…

A: According to the concept of relative speed, the speed of the train and the speed of the person…

Q: The crew of an enemy spacecraft attempts to escape from your spacecraft by moving away from you at…

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Q: A man standing still at a train station watches two boys throwing a baseball in a moving train. The…

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Q: A proton travels at 99.9912% of the speed of light. An antiproton travels in the opposite direction…

A: concept:

Q: Choose the option from each pair that makes the following statement correct. According to an…

A: A clock in motion runs more slowly in comparison to an identical stationary clock due to time…

Q: If a flashing light source moves toward you fast enough so that the duration between flashes is half…

A: It is given that a flashing light source is moving towards us such that the duration between the…

Q: Two spaceships are heading towards each other with speeds of 0.5c. One ship shines a laser beam at…

A: Speed is light is invariant under lorentz transformations.

Q: Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving…

A: Ans:- Image-1

Q: Which of the following is not true about Newton's theory for light as a particle? a. Light…

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Q: A man standing at window 6.00 m tall watches a falling stone passing by in 0.4532 s. From how high…

A: Whenever a body undergoes motion in one direction at one time. The system follows the Newton's laws.…

Q: In the Michelson-Morley experiments two light beams were raced at right angles to each other to…

A: Michelson-Morley's experiment is done to find out the Earth's velocity. An ether medium is taken to…

Q: A spaceship travels at a speed of 2.4 x 108 m/s. A clock in the spaceship passes 60 seconds. How…

A: According to the time dilation, t'=t1-v2c2t=t'1-v2c2

Q: The car is moving at 10 m/s relative to Bill. How fast does Amy see the car as moving?A. 5 m/s…

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Q: ing searchlight in a lighthouse 2 km offshore is following a car traveling slowly along the shore.…

A: A revolving searchlight in a lighthouse 2 km offshore is following a car traveling slowly along the…

Q: The speed of light in water is 2.30 X 108 m/s. Suppose an electron is moving through water at 2.50 X…

A: The consistency of speed of light in vacuum: The speed of light in vacuum has the same value  in all…

Q: A spaceship measures bright flashes of light from a distant star. The spacecraft now heads toward…

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Q: From the reference frame of a stationary observer, a moving object will appear ________ compared to…

A: Proper length is the length measured in the frame when the object is at rest. When the object is…

Q: A 135m long steel beam is moving past the Earth actually measures the steel beam to be only 57m…

A: Given a 135m long steel beam is moving past the Earth actually measures the steel beam to be only…

Q: A rocket is traveling at 0.3 times the speed of light. If it's speed is doubled, by what factor does…

A: Velocity of rocket (v) = 0.3 x C; C is speed of light = 3 x 108 m/s Velocity of rocket is,  V = 0.9…

Q: Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving…

A:

Q: If you were looking in a mirror while traveling at the speed of light, you would see Group of answer…

A: Speed of light is constant having value 3 × 108 m/s.

Q: Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving…

A: Distance =speed×time

Q: A 50-year-old astronaut goes off on a long-term mission in a spacecraft that travels at speeds close…

A: Age will definitely increase.In the Earth's frame 200 years have been elapsed.In the astronaut's…

Q: The speed of light in free space has been measured to be 2.99792458 x 108-m/s.Express the speed of…

A:

Q: An astronaut must journey to a distant planet which is 200 light-years away from Earth. What speed…

A: Here given an astronaut  journeys a distant planet of 200 light year. He wishes to age only 10…

Q: Which of the following can be different for observers in two different inertial frames? (Select all…

A: To identify : The quantities which can be different for observers in two different inertial frames…

Q: An out-of-control alien spacecraft is diving into a star at a speed of 1.0 x 108 m/s. At what speed,…

A: According to the Einstein principle of relativity the speed of the light will be always same in all…