a ball is equipped with a speedometer and launched straight upward. The speedometer reading three seconds after launch is 20 m/s ; the ball is moving up . At what approximate times would the ball be moving downward and display the following speedometer readings is 10m/s and 20 m/s?

search it i found it but its a very long answer so just look it up and you will see it sorry i could not type it all.

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.