Please need someone to check this soon

[Ion1776]

3. You lower a 2.50 kg textbook (remember when textbooks used to be made out of paper instead of being digital?) from a height of 1.81 m to 1.50 m. What is its change in potential energy?

1.50-1.81=-.31
(2.50kg)(9.80)(-.31)

=-7.595?

 

[sylas]

3. You lower a 2.50 kg textbook (remember when textbooks used to be made out of paper instead of being digital?) from a height of 1.81 m to 1.50 m. What is its change in potential energy?

1.50-1.81=-.31
(2.50kg)(9.80)(-.31)

=-7.595?

Looks good. It is particularly good that you have minus sign, indicating that the book has lost potential energy. To be perfect, give the units.

 

[willem2]

The numbers are OK. I'd put in some units and some text before you turn it in.