Which of the following is not an example of a force acting against inertia?
a. a thrown rock being pulled to the ground via gravity
b. a piece of cork floating up from deep underwater
c. a saucer balancing on a narrow precipice
d. a boulder rolling down a cliff

inertia is the force that compels something to keep the state its in. if it’s in motion inertia wants it to stay in motion and if it’s at rest then inertia wants it to stay at rest. i can think of gravity acting against, friction, etc examples so which one is right? my guess is c.

Explanation:

Inertia is the property of a body to remain in it's original uniform motion unless been acted upon by an external force. It is the objects ability to resist change in motion. That is, its ability to resist acceleration.

The bold word 'Acceleration' says a lot about one most useful property of Inertia,and it's ability to resist acceleration couple with friction.

v=ir = 3x15 =45 v

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.