(02.03 LC)
Which of the following is a characteristic of electromagnetic waves? (2 points)
O They are all visible.
O They have a purely particle nature.
O They can travel with or without a medium.
They cannot travel very fast.
Question 8

A6.0-kilogram cart initially traveling at 4.0 meters per second east accelerates uniformly at 0.50 meter per second squared east for 3.0 seconds. what is the speed of the cart at the end of this 3.0 second interval? (1) 1.5 m/s (3) 3.0 m/s (2) 5.5 m/s (4) 7.0 m/s