A rock falls from a cliff with an acceleration of 13 m/s2 towards the ground. If the rock starts from rest, and it takes 3 s to hit the bottom, how high was the cliff in meters?

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.

pecialized keyboards

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach