A 5 kg block is being pushed horizontally across a level surface at a constant velocity. What is the magnitude of the Normal force acting on the block? Hint: strength of gravity is 10 N/kg

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