Physics help from experts.
1. Slope refers to the steepness of a line or surface. Slope of a line is the ratio of change in elevation to the horizontal distance required to achieve that new elevation.
2. Slope may also refer to a surface inclined at an angle from the horizontal. Such a surface is called inclined plane or ramp.
The normal force on a ball rolling down an inclined plane is
a. greater than mg
c. greater than or less than mg
d. less than mg