Ap Physics 1 Unit 5 Exam Questions (28 Terms) With Verified Definitions Updated 2024

How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes? {Ans: 0 joules}What happens to the gravitational potential energy when the water at the top of a waterfall falls to the pool below? {Ans: it is converted to kinetic energy}__________ __________ is generally described as stored energy. {Ans: potential energy}A baseball and a car can have the same kinetic energy. If this is true, what must be different about them? In this situation, how would the motion of each object compare? {Ans: the car has more mass than the baseball so for it to have the same KE, it would have to have a much lower velocity // EX: 90 mph is about 40 m/s for car, mass of baseball is about 0.15 kg -- baseball at 40 m/s -- 1/2(0.15)(40)^2=120 J , car mass is about 1200 kg -- 120=1/2(12000)v^2 -- v=0.45 m/s , the velocity of the car is much lower than the velocity of the baseball}True or False: When you jump into the air, the floor does work on you, increasing your kinetic and potential energy. {Ans: true