Speed and Velocity
Instruction Active
Calculating Velocity
Shelley gives her little sister a 5-meter head start in a bike race. The race ends 15 meters east from where Shelley
started. If her little sister completes the race in 5 seconds, what is her sister's average velocity? (Round your answer
to the nearest whole number.)
O
O
O
1 m/s east
2 m/s east
3 m/s east
4 m/s east
O

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.