Light travels in waves. Which of the following statements about light waves is NOT true? A
They travel in straight lines.
B.
They can travel through any substance.
С
They can come from natural or artificial sources.
D
They change direction when they are reflected or refracted.

Aspaceship starting from a resting position accelerates at a constant rate of 9.8 meters per second per second. how far will the spaceship travel if its final speed is 1 percent the speed of light (300,000,000 m/s)? a. 3.1 × 106 m b. 2.94 × 108 m c. 7.8 × 1010 m d. 4.6 × 1013 m