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An uncontrolled 850 kg car strikes squarely a motorway crash cushion in which the car is brought to rest by successively
Posted: Sun May 15, 2022 10:23 pm
by answerhappygod
- An Uncontrolled 850 Kg Car Strikes Squarely A Motorway Crash Cushion In Which The Car Is Brought To Rest By Successively 1 (374.8 KiB) Viewed 60 times
An uncontrolled 850 kg car strikes squarely a motorway crash cushion in which the car is brought to rest by successively crushing steel barrels. The length of the crash cushion is 5.9 m, and the magnitude F of the force required to crush the barrels as a function of the distance x the car has moved into the cushion is given by 85kN (0 < x < 1.7m) 130kN (1.753 <4.4m) 170kN (4.4 < x < 5.9m) a) Determine an expression for the work done by the force Fas a function of x. b) If the car strikes the crash cushion with a velocity of 138 km/h, determine the distance the car will move into the cushion before it comes to rest and the maximum deceleration of the car.