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23 Nov 2019
An automobile is traveling at 90 km/h (25 m/s) on a narrow countryroad when the driver suddenly notices a cow on the road 30 m ahead.The driver attempts to brake the automobile, but the distance istoo short. Assume that the reaction time of driver is 0.75 s andthat the deceleration of the automobile is 8.0 m/s2
a. With what velocity does the automobile hit the cow?
b. Sketch the velocity-time and acceleration-times graphs for themotion of the car.
please workout the problem step by step and show any kinematicformula conversions you made.
An automobile is traveling at 90 km/h (25 m/s) on a narrow countryroad when the driver suddenly notices a cow on the road 30 m ahead.The driver attempts to brake the automobile, but the distance istoo short. Assume that the reaction time of driver is 0.75 s andthat the deceleration of the automobile is 8.0 m/s2
a. With what velocity does the automobile hit the cow?
b. Sketch the velocity-time and acceleration-times graphs for themotion of the car.
please workout the problem step by step and show any kinematicformula conversions you made.
Hubert KochLv2
24 Jun 2019
