A boy flies a kite with the string at a 30degrees angle to the horizontal. The tension in the string is 4.5 N.

1.How much work does the string do on the boy if the boy walks a horizontal distance of 11 m away from the kite?

2.How much work does the string do on the boy if the boy walks a horizontal distance of 11 m toward the kite?

pleaseee help!!

## Answers (1)

W = F d cos θ

W =4.5N * 11m * cos 150 = -42.9 J

W =4.5N * 11m * cos 30 = 42.9 J