Astudent throws a 0.160-kg ball straight upwards to a height of 4.70 m. how much work did the student do?

How would doubling the made of an object change the objects potential energy

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.