Question #7f373

1 Answer
Feb 17, 2017

m=1420 kg

Explanation:

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

KE=1/2mv^2

m="the mass of the object"

v="the velocity"

in this case

1,136,00=1/2xxmxx40^2

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

m=1420 kg