A ball is dropped off the side of a bridge. After 1.55 s, how far has it fallen?
(Unit = m)
Remember: Falling = -V
Lost height = -Ay
a = -9.80 m/s2 Be careful with minus signs!!!

second equation of motion

s = ut + 1/2at^2

s is the distance travelled time t

u is the initial velocity

t is the time

a is the acceleration of the body in motion

u is 0

s = 1/2 * -9.8 * (1.55)^2

s = -11.77 m

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

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.