Math, asked by saanju, 1 year ago

calculate the kinetic energy of a car with a mass of 500kg moving with a velocity of 36km/h.find the kinetic energy if the velocity of the car doubles


saanju: plz very urgent someone answer

Answers

Answered by toxner
5
the kinetic energy is 0.5*mass*velocity^2 so it will be 9000. when the speed doubles it will be 4 times so it will be 36000

saanju: give me the units
toxner: joules
saanju: wat about up answer its correct or not
Answered by nesthangam
28
kinetic energy=1/2mv²
                      =1/2*500*(36)²
                      =324000J
after velocity is doubled=1/2*m*v²*v²
                                         = 1/2*500*1296*1296
                                        =419904000J

saanju: whethere answer is correct
saanju: p he got one answer vu got answer whether its correct
nesthangam: but this is the right formulae
saanju: correct know ????
nesthangam: i dont know
nesthangam: i'm not sure
nesthangam: sry
nesthangam: i'm sure mine is correct
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