Question

The force of gravity on an object varies directly with its mass. The constant of variation due to gravity is 32.2 feet per second squared. Which equation represents F, the force on an object due to gravity according to m, the object’s mass?

F = 16.1m
F = F equals StartFraction 16.1 Over m squared EndFraction.
F = 32.2m
F = F equals StartFraction 32.2 Over m squared EndFraction.

Answer 1

Direct variation means F = k·m. With k = 32.2, the equation is

F = 32.2m.