Question #7f373

1 Answer
Feb 17, 2017

Answer:

#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#