What is the kinetic
energy of a body of a
mass 12kg and moving
with a velocity of
200m/s ?

The answer to this question is Ek= 240 000J

Explanation: The kinetic energy is the energy in motion. The formula for the kinetic energy is Ek=1/2mv^2

m is the mass and v is the velocity.

Ek=1/2(12)(200)^2

Ek=240 000J

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west