What was done to protect the ozone layer? X a. Ban Freon, aerosol cans, and refrigerants
b. Get rid of appliances older than 1995
C. Plant trees, plants and algae
d. A and B

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?