nathalie4094 nathalie4094
  • 27-08-2017
  • Physics
contestada

Calculate the kinetic energy (in units of kj and ft-lbf) for a 908 kg automobile traveling at 89 km/hour

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Erythrosin17
Erythrosin17 Erythrosin17
  • 08-09-2017

Kinetic energy is the energy that is possessed by an object that is moving. It is calculated by one-half the product of the mass and the square of the velocity of the object. We calculate as follows:

KE = mv^2 / 2
KE = 908 kg (89 km/hr ( 1000 m / 1 km) ( 1 hr / 3600 s ))^2 / 2
KE = 277479.48 J or 204658.05 ft-lbf


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