What is the kinetic energy in joules of a 1140-kg automobile traveling at 83 km/h?

Please note thta the kinetic energy T of a particle of mass M and speed V, is given by the subsequent formula:

T = (1/2) M* V^2

so substituting your numerical data we get:

T = (1/2) * 1140* (23.05)^2, please note that 83 Km/h are 23.05 m/sec.

So we have:

T= 302,842 Joules,

or:

T = 303 KJoules (approximated value)

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