A) line segment AB is showing the cart traveling at 10 m/s.
B) Line segment CD is showing acceleration as the line has a straight increasing slope.
C) Line segment DE is showing the cart is traveling at a constant rate.
D) Line segment BC is showing acceleration as the cart is increasing its speed.
connexus! Answer b...
The answer is B.......
The more energy in a wave, the higher its frequency. The lower the frequency is, the less energy in the wave.