Ineedd ! 20 points
newton's universal law of gravitation states that all objects attract each other with a proportional to the product of their masses proportional to the square of the distance between their centers. when considering objects on the surface of the earth, the force proportional to the product of the mass of the object and due at the earth's surface. since the earth than any object under consideration, the object is the earth.

word bank: all
acceleration
away from directly
directly
gravity
inversely
larger
smaller
some
toward

Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative