When we look at a blue recycle bin, we see blue

When light hits an object, that object absorbs some light, and reflects other light.  A blue recycle bin absorbs red and green light, but reflects blue light.  The blue light then hits your retina at the back of your eye and a signal is sent to the visual cortex of your brain.  Your brain then perceives this signal as colour.

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//