(a) Surely your text material incudes the formula for gravitational potential energy. Use it.
(b) The kinetic energy increase at the bottom equals the potential energy calculated in part (a)
A 17-kg rock is on the edge of a 103-m cliff.
(a) What potential energy does the rock possess relative to the base of the cliff?
. J
(b) The rock falls from the cliff. What is its kinetic energy just before it strikes the ground?
J
5 answers
we don't have textbooks, and my teacher dosent teach, he just gives us really hard homework:(
Yeah! Right!
a) mass*gravity*height= gravitational potential energy.
17*103*9.8= x Joules
b) as the object falls the potential energy is converted to kinetic. so just before it hits the ground all of the potential energy has become kinetic.
17*103*9.8= x Joules
b) as the object falls the potential energy is converted to kinetic. so just before it hits the ground all of the potential energy has become kinetic.
A 20 kg rock is at the edge of a cliff 100 m above the ground. What is the potential energy of the rock?
2 answers