The free-body diagram below represents person on a skateboard riding down a ramp that forms a 30.0° angle with the ground. The normal force is perpendicular to the ramp and gravity points toward the center of the
Earth, or down. Use g = 9.8
m
32
Fnorm
Fg
30°
Calculate the magnitude of the acceleration of the skateboard along the ramp.

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.

snell's law

refractve index = sin incidence / sin refraction