An astronaut holds a rock 100 m above surface of Planet X. The rock is then thrown upwards with a sleek of 15m/s. The rock reaches the ground 10s after it is thrown the atmosphere of Planet X has a negligible effect on the rock. Determined the acceleration due to gravity of the rock when it is in planet x

Explanation:

This problem is related to vertical motion, and the equation that models it is:

(1)

Where:

is the rock's final height

is the rock's initial height

is the rock's initial velocity

is the angle at which the rock was thrown (directly upwards)

is the time

is the acceleration due gravity in Planet X

Isolating and taking into account :

(2)

(3)

(4) This is the acceleration due gravity in Planet X

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.

dang that balls went far