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Your accident-reconstruction team has been hired by the local police to analyze the following accident. A careless driver rear-ended a car that was halted at a stop sign. Now before impact, the driver slammed on his brakes, locking the wheels. The driver of the struck car had his foot solidly on the brake pedal, locking his brakes. The mass of the struck car was 870 kg, and that of the initially moving vehicle was 1205 kg. On collision, the bumpers of the two cars meshed. Police decide from the skid marks that after the collision the two cars moved 0.6 m together. Tests revealed that the coefficient of kinetic friction among the tires and pavement was 0.92. The driver of the moving car claims that he was traveling at less than 15 km/h as he approached the intersection.
What was the moving car's actual velocity?
A railroad car with a mass of 11600 kg collides and couples with a second car of mass 18600 kg that is initially at rest. what is the final velocity of the two railroad cars after they couple
A 250, 35-cm-diameter turntable rotates on frictionless bearings at 60. A 25 block sits at the center of the turntable. A compressed spring shoots the block thoroughly outward next to a frictionless groove in the surface of the turntable.
find the electric field at the center of a square produced by four equal 2 muc charges located at its corners. also for
two electric charges, eagh of+6.00μ C are placed at thecorners of the base of the square of the side s=8.50m. find the magnitude of the force on each of the charges
A typical GPS (Global Positioning System) satellite orbits at an altitude of 4.40 107 m. Find the orbital period of such a satellite
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How much work is done on the car by the engine when accelerating the car from rest to 90m/s, What is the average power delivered by the engine
A thin film of alcohol (n=1.36) lies on a flat glass plate(n=1.51). When monochromatic light, whose wavelength can bechanged, is incident normally, What is the minimum thickness of the film
question1a sealed well-insulated 2000ml thermos bottle with negligible heat capability is completely empties - a
Two water reservoirs are open to the atmosphere. The manometer contains mercury with the density of 13,600kg/m cubed. What is the difference in elevation if the manometer reading is 25cm.
question a -4.0-microc charge is situated at the origin of an xy-coordinate system. what is the magnitude and direction
light of wavelength 696 nm is incident on a single slit. the central bright fringe is 2.64 cm wide on a flat screen
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