Car B is traveling twice as fast as car A, but car A has four times the mass of car B. Which car has the greater kinetic energy?
Answer to relevant QuestionsA lab notebook sits on a table 0.75 m above the floor. Your lab partner tells you the book has zero potential energy, and another student says it has 8.0 J of potential energy. Who is correct? You are carrying a backpack across campus. What is the work done by your vertical carrying force on the back-pack? Explain. A crate is dragged 3.0 m along a rough floor with a constant velocity by a worker applying a force of 500 N to a rope at an angle of to the horizontal. (a) How many forces are acting on the crate? (b) How much work does ...A spring has a spring constant of 30 N/m. How much work is required to stretch the spring 2.0 cm from its equilibrium position? For the spring in Exercise 25, how much mass would have to be suspended from the vertical spring to stretch it In exercise A particular spring has a force constant of 2.5 x 103 N/m. (a) The first 6.0 cm and (b) The ...
Post your question