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: You encounter a moving walkway that is 75 mm long and has a speed of 1.9 m/sm/s relative to the…

A: Given value--- speed of walkway = 1.9 m/s. distance = 75 m. We have to find --- How long would it…

Q: 1. Two cars are traveling at constant speed along a road in the same direction. Car A moves at 60…

A: Step 1: To find the speed of Car A relative to Car B, we need to determine how fast Car A is moving…

Q: A UFO is observed directly above the earth moving at a constant velocity. An astronaut on the moon…

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Q: An astronomer on Earth observes red light at 680 nm from a distant galaxy. The astronomy knows that…

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Q: A UFO is observed directly above the earth moving at a constant velocity. An astronaut on the moon…

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Q: According to Einstein's Special Theory of Relativity, an object moving at close to the speed of…

A: Einstein's special theory of relativity says that, the length of an object moving with a…

Q: An object moves at a speed of 0.80 in the +x direction, as measured in the Home Frame. What is its…

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Q: Dan picks up a 15-m-long pole and begins running very fast, holding the pole horizontally and…

A: To determine: When Dan picks up a long pole and begins to run very fast, heading towards the barn.…

Q: 4He) and a 234Th nucleus. If the alpha particle moves off at 22 degrees above the x axis with a…

A: A) applying conservation of momentum In X direction 238 * 4.8×105 = 4 * 2.0×107 * cos24 + 234 * Vx…

Q: 27. The figure shows the velocity of two spaceships as measured by an observer on earth. What is the…

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Q: In the “redshift” of radiation from a distant galaxy, the light Hy, known to have a wavelength of…

A: Given: Observed wavelength is 434 nm Appeared wavelength is 462 nm

Q: An athlete crosses a 21 m wide river by swimming perpendicular to the water current at a speed of…

A: a) Speed of the water in the river with respect to the ground is, dvR-G=wvsvR-G=vsdw=0.85 m/s39 m21…

Q: As discussed in section R3.4, muons created in the upper atmosphere can sometimes reach the earth’s…

A: Time dilation: If the time interval  is measured between two events in a moving frame, then the time…

Q: A UFO is observed directly above the earth moving at a constant velocity. An astronaut on the moon…

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Q: Suppose that construction crews have set up a pair of blinking lights 60 m apart to mark a…

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Q: Consider an athlete running a 100-m race. How fast would she have to be running for her race to…

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Q: A starship blasts past the earth at 2.0 x 108 m/s. Just after passing the earth, the starship fires…

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Q: A spaceship travels at a constant speed from earth to a planet orbiting another star. When the…

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Q: A railroad flatcar is traveling to the right at a speed of 13.0 m/sm/s relative to an observer…

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Q: A meter stick moves past you, with its motion relative to you parallel to its long axis. If you…

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Q: You are standing on the top deck of a cruise ship. The GPS on your phone tells you that you are…

A: Given,Velocity of person with respect to ground vpg=16sin(70)i^-16cos(70)j^Velocity of Wind with…

Q: A Space Shuttle which is 60 meters in length flies past you at 1.2 x 104 m/s. How much shorter is it…

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Q: An astronaut is said to have tried to get out of a traffic violation for running a red light (λ =…

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Q: Observer S detects two flashes of light. A big flash occurs at x1 = 1271 m and, slightly later, a…

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Q: A UFO is observed directly above the earth moving at a constant velocity. An astronaut on the moon…

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Q: Willy Wonka is in court for running a red light (675 nm). He tells the judge that it was indeed, a…

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Q: our friend and you fly in identically constructed spacecrafts. She overtakes you at a constant…

A: Concept used: At relativistic speeds, length gets contracted. Time gets dilated.

Q: Two spaceships, A and B, fly by a space station. An observer on the space station uses a telescope…

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Q: Light travels at a speed of about 3×10; m/s. How many miles does a pulse of light travel in a time…

A: Given: Speed of light,c=3×108 m/s Time, t=0.1 s As velocity, v=dt Plugging value of v and t we get,…

Q: A cruise ship going across a lake 15km wide travels a distance of 6km at a certain speed and then…

A: Given,

Q: A laser pointer is placed on a platform that rotates at a rate of 19 revolutions per minute. The…

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Q: Tom is moving at 19.1 m/s i-hat relative to Ann. Bob is moving at 17.1 m/s i-hat relative to Ann.…

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Q: A (field) hockey player is running north at a speed of 8m/s. A ball is coming directly towards her…

A: Given;-  A (field) hockey player is running north at a speed of 8m/s. A ball is coming directly…

Q: Consider the case of two kids, Sam and Peter, riding a train and playing catch in an empty car. The…

A: Speed of train = 10 m/s (towards right)Speed of ball thrown by Sam = 5 m/s (towards right)Speed of…

Q: Two events that happen at different positions x1 and x2 but at the same time t1 = t2, as measured in…

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Q: Two speedboats are traveling at the same speed relative to the water in opposite directions in a…

A: As observed from the shore, the speed of the boats can be expressed as the vector sum, of the boat…

Q: A severely injured Peter can only live for the next 3.5 hours. Before dying, he wants to go back to…

A: Speed is the distance traveled per unit time. Its SI unit is m/s. The SI unit of distance is meter.…

Q: You are now in 20 years old. You are disappointed with the current situation. So, you decide to…

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Q: Peggy, standing on a moving railroad car, passes Ryan at velocity ν. Peggy and Ryan both measure the…

A: Introduction: The length contraction is the shortening of the measured length of a moving object…

Q: 1. Taking north as positive and south as negative for all reference frames, suppose Mayor Adams is…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…