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A drag racer crosses the finish line doing 216 mi/h and promptly deploys her drag chute (the small parachute used for braking).
(a) What force must the drag chute exert on the 850 kg car to slow it to 45.2 mi/h in a distance of 161 m?( __kN)x^
(b) Describe the strategy you used to solve part (a). (Do this on paper. Your instructor may ask you to turn in this work.)
A small object is placed to the left of a convex lens and on it's optical axis. The object is 30 cm from the lens and has a focal length of 12 cm. Describe the nature of this image
A 5 kg rock is dropped from rest down a vertical mine shaft. How long does it take for the rock to reach a depth of 79 m? Neglect air resistance.
A golf ball strikes a hard, smooth floor at an angle of 32.5 ° and rebounds at the same angle, What is the magnitude of the impulse applied to the golf ball by the floor
Force F = (6.0 N) i hat + (-9.0 N) k hat acts on a pebble with position vector r = (0.90 m) j hat + (-0.6 m) k hat, What is the resulting torque acting on the pebble about the origin
At the intersection of Texas Avenue and University Drive, a yellow, subcompact car with mass 800kgtraveling east on University collides with a maroon pickup truck with mass 1850kg, Calculate the speed of the car before the collision
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 19.0° below the horizontal, Find the car's position relative to the base of the cliff when the car lands in the ocean
A uniform disk of mass 7.00m and radius 7.00r can rotate freely about its fixed center like a merry-go-round, What is the ratio K/K0 of the new kinetic energy of the two-disk system to the system's initial kinetic energy
Three capacitors are arranged. C1 has a capacitance of 5.0 pF, C2 has the capacitance of 10 pF, and C3 has the capacitance of 15 pF. Find the voltage drop across the entire arrangement if the voltage drop across C2 is 311 V.
A plane wave of wavelength 580 nm is incident on a slit with a width of a = 0.50 mm. A thin converging lens of focal length +80 cm is placed between the slit, How far is the screen from the lens
A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, What was the bear's average speed
A 8 kg stone is dropped from a height of 170 m. Find its kinetic and potential energies when it is halfway to the ground
A 3-m-long rigid beam with a mass 120 {rm kg} is supported at each end. An 70 {rm kg} student stands 2.0 {rm m} from support 1. How much upward force does support 1 exert on the beam.
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