A 123 N crate with a mass of 12.6 kg is sitting on a shelf that is 4.9 m above the factory floor. What is the potential energy of the crate? Show all 3 steps. Be sure to include your units for each step and for your final answer.

605 joules

Explanation:

Potential energy is the energy possessed by a body at rest.

Potential energy = Mass m x Acceleration due to gravity g x height h

In this case,

Mass of crate = 12.6 kg

Acceleration due to gravity = 9.8m/s^2

Height above factory floor = 4.9 metres

P. E = mgh

= 12.6kg x 9.8m/s^2 x 4.9m

= 605.052 = ( 605 joules of energy approximately)

Thus, the potential energy of the crate is 605 joules

the device is called “ rocket engine”

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles