True because the kind of light we get is white light and everything we see is actually every colour except the color we are seeing because that is wwhat is reflected
Because it generates enough momentum to keep the train going with out really having to speed up
You use the equation Velocity = Acceleration X Time. 4x4=16m/s.
The car travels 18m in 3 seconds.
Significant digits show the precision of measurements and calculations
D. Nucleus because it is not a part of the group.