What will happen to the kinetic energy of an object if its speed doubles?

Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above

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.

What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.