Which car has the most kinetic energy

If forces acting on an object are unbalanced. true or false

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration