Suppose the speed of light were only 3000 m/s. A jet fighter moving toward a target on the ground at 800 m/s shoots bullets, each having a muzzle velocity of 1000 m/s. What are the bullets velocity relative to the target?

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: 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: They stick together and move at what speed?

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Q: 14. Andrea, of mass 54.5kg, thinks she's sitting at rest in the middle of her 4.81m long dorm room…

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Q: A sprinter crosses the finish line of a race. The roar of the crowd in front approaches her at a…

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Q: While a balloon-supported gondola is rising at a speed of 2.0 m/s, a passenger in the gondola throws…

A: Given Velocity of  gondola w.r.t ground          VgG  = 2.0 m/s   ............ upward Velocity of…

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

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Q: tourist is walking at a speed of 1.05 m/s along a 6.03-km path that follows an old canal. If the…

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Q: A fish swims 3.7 m [N] then 3.8 m [S]. What distance has the fish travelled?

A: In the question, it is asked for the distance traveled not the displacement. Distance is a scalar…

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: Air breaks down (loses its insulating quality) and sparking results if the field strength is…

A: Answer:-    B) 5.27*10^20 mm

Q: Joey starts riding his scooter from his apartment to campus. He thinks it would be fun to make a…

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

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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: We did this problem in class (3.10) and the answer ended up being 1.35 m/s but I'm still confused…

A: Use the kinematics to solve for the time of the flight.

Q: A How fast would it have to be going past you in order for it to appear only 5.5 m long? Give you…

A: Given length of car 6.05m moving with great speed. To find how fast it have to be going to appear…

Q: A study of bluefish locomotion found that their tail motion produces an average thrust of 0.65 N.…

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Q: A spaceship is travelling at 55 m/s [E74S] when it fires its rockets, which provide an acceleration…

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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: Jane and Bob see each other when 100 m apart. They are moving toward each other, Jane at speed…

A: Assume that the Jane and Bob are moving along the x-axis

Q: A boat takes 3.0 hours to travel 30 km down a river, then 5.0 hours to return. How fast is the river…

A: vboat+vriver=dtdownvboat+vriver=30 km3.0 hvboat+vriver=10 km/h......................(I)

Q: You’re standing on an asteroid when you see your best friend rocketing by in her new spaceship. As…

A: Given: The contracted length is L=400 m. The proper length id Lo=500 m. The expression for length…

Q: A spaceship has a length of 20 meters at rest and accelerates to high speed. A person at rest on the…

A: Given data: The length of the spaceship is Lo=20 m. The length of the ship observed by the observer…

Q: A police jeep is following a car with a speed of 120m/s fires an object with speed of 80m/s. If car…

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Q: A spaceship travels from the Earth to a star 13 light years away (as measured in the Earth’s frame).…

A: Given values: Time measured from earth's frame or proper time period, ∆t0=13 ly Time measured by…

Q: Consider a 5.75 m long sports car going past you at great speed. How fast would it have to be…

A: The formula for length contraction is l=l01-vc2

Q: When measuring with a muline, it was measured as n=10 when the speed was 1.1 m/s, and as n=32 when…

A: To determine the velocity formula based on the given measurements, we can use the equation for the…

Q: Imagine that you are going for a ride in a hot air balloon at the Canowindra Balloon Challenge.…

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