A policeman is positioned on a highway without a radar gun. He knows the distance from the construction zone to an exit is a quarter mile, and the speed limit is 60 mph. He times a car taking 10 seconds to go the quarter mile. He times a truck taking 12 seconds to go the quarter mile. Could he ticket them for speeding? Justify your answer.

Q: A space probe on the surface of Mars sends a radio signal back to the Earth, a distance of…

A: Given data: The distance between Mars and Earth d = 7.86×107 km speed of light v =3×108 m/s

Q: Kinesin is a motor protein that moves cargo within cells in a series of rapid 8-nm -long steps. Each…

A:

Q: You have an old American Mustang that you have shipped to Austria. The speed limit on the autobahn…

A: The speedo meter measures the Instantaneous speed of the vehicle. The speed limit on the autobahn in…

Q: A car is traveling at a speed of 42.6 m/s on an interstate highway where the speed limit is 60.0…

A: Speed of a car on interstate highway (v)= 42.6 msSpeed limit on interstate highway = 60 mi/hr

Q: A student estimates that his daily commute to college consists of 10 minutes driving at a speed of…

A: Given v(t) vs t graph:

Q: In 2015, a Japanese high-speed train set a record— traveling at 374 mph during a test run near Mt.…

A: Given speed  V=374 mph and 1 mile=1609 m=1.609 kilometres  since we know that 1 kilometres =1000…

Q: Using highway mileposts, you clock 4 min,45 s to go 5 m. If the mileposts are accurate, what's the…

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Q: George walks to a friend’s house. He walks 750 meters North, then realizes he walked too far. He…

A: Given:George walks to a friend’s house. He walks 750 meters North, then realizes he walked too far.…

Q: A​ "bullet" train set a new world record for train speed at 546 kilometers per hour during a manned…

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Q: As a city planner, you receive complaints from local residents about the safety of nearby roads and…

A: Using law of conservation of energy,

Q: You are driving home from school steadily at 97 km/hkm/h for 160 kmkm . It then begins to rain and…

A:

Q: A car is traveling at a speed of 41 m/s. a) what is its speed in kilometers per hour ? b) is it…

A: Given data:  Speed (v) = 41 m/s Required: Speed in km/h

Q: Paleontologists use the function W(x) = 4√/2x to estimate the walking speed of a dinosaur, W(x), in…

A: We are given the walking speed of dinosaur. This speed is a function of length of leg of dinosaur.…

Q: kilometers

A: Time spent by John during driving= 2.5hr Average speed= 65 mph Total distance travelled by him can…

Q: A bicyclist rides the first 60 km of a 220 km race in 1.5 hours. What is the bicyclist average…

A:

Q: A jet airplane reaches 863 km/h on a certain flight. What distance does it cover in 5.0 minutes? Set…

A: Speed of jet plane,                                 Time,                                  We need…

Q: Problem 2: A car is traveling at a speed of 33 m/s. art (a) What is its speed in kilometers per…

A: Given:  Speed  of car            S=33 m/s   we  have  to find  S  in  Km/h

Q: You get pulled over for running a red light. $500 fine. When you get to court, you explain that it…

A:

Q: An old commuter train travels a distance of 100 km from Union Station to Berkeley’s Crossing in the…

A: To determine,part ahow many hours does the trip take(t).given,speed(v)=45 mphdistance(d)=100…

Q: Evan is just leaving his house to visit his grandma. Normally, the trip takes him 25 minutes on the…

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Q: Sally has a very important date at eight in the evening, but she has some errands to do first. She…

A: The speed of the person is .The distance of the shopping center is .She talks with her friend for…

Q: 4) A freight train left Smithfield at 1:00pm and traveled 100 km ea the final destination at 3:00pm.…

A:

Q: Danny takes his dog to the local dog park every morning, as well (dog-walking is very popular in…

A:

Q: As you are driving to school one day, you pass a construction site of a new building and you stop to…

A:

Q: Tectonic plates are large segments of the earth's crust that move slowly. Suppose one such plate has…

A:

Q: A common speed limit in Vancouver, British Columbia, is 70 km/hr. You are going 61 MPH. What is…

A: The speed limit in British Columbia is =70km/h.                 The speed in MPH is =61MpH     We…

Q: The Antarctic expedition drives their snowmobiles 185 miles south from their camp. Then they turn…

A:

Q: Evan is just leaving his house to visit his grandmother. Normally, the trip takes him 25 minutes on…

A: Write the formula for the distance in terms of speed and time when the speed is constant.

Q: You start out by driving 55 miles north in 3 hours and 39 minutes, and then you stop and park for a…

A: Given: First displacement, = 55 miles in North time, t1 = 3 hour and 39 minutes Second displacement…

Q: As a city planner, you receive complaints from local residents about the safety of nearby roads and…

A:

Q: A train is moving with 72km/hr constant speed from one station to the other. The train is  50,000kg.…

A:

Q: As a city planner, you receive complaints from local residents about the safety of nearby roads and…

A:

Q: Anne traveled from Lincoln, Nebraska, to Detroit, Michigan, a distance of 855 miles. She stopped…

A: Motion perpendicular are independent of each other. Motion can be uniform or accelerated. Motion is…

Q: A long-distance runner kept up a pace of 8.0 minutes per 1 km for a total of 6530 seconds. How many…

A: A long-distance runner kept up a pace of 8.0 minutes per 1 km for a total of 6530 seconds. How many…