select the correct answer. which of the following is a good example of a contact force? a. earth revolving…

select the correct answer. which of the following is a good example of a contact force? a. earth revolving around the sun b. a bridge suspended by cables c. a ball falling downward a few seconds after being thrown upward d. electrically charged hairs on your head repelling each other and standing up

select the correct answer. which of the following is a good example of a contact force? a. earth revolving around the sun b. a bridge suspended by cables c. a ball falling downward a few seconds after being thrown upward d. electrically charged hairs on your head repelling each other and standing up

Answer

Brief Explanations:

Contact force requires physical contact between objects. Earth - Sun is gravitational, ball - Earth is gravity, charged hairs is electrostatic. A bridge suspended by cables has cables in contact with the bridge, providing tension (a contact force).

Answer:

B. a bridge suspended by cables