Question #7f373

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Answer 1 · 2017-02-17T13:39:26

$m = 1420 k g$ $m=1420 kg$

Kinetic energy of a moving object can be calculated from the formula

$K E = \frac{1}{2} m v^{2}$ $KE=1/2mv^2$

$m = the mass of the object$ $m="the mass of the object"$

$v = the velocity$ $v="the velocity"$

in this case

$1, 136, 00 = \frac{1}{2} \times m \times 40^{2}$ $1,136,00=1/2xxmxx40^2$

$:. m=(1,136,000xx2)/40^2$

$m=1420 kg$