lunar vehicle is tested on earth at a speed of 10 km/hour. when it travels as fast on the moon, is its momentum more, less, or the same?

radiation

explanation:

heat is transmitted by radiation

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