If a ball rolls down a hill at a speed of 6.5m/s for 7s, how far did it travel?

Which statement best describes how private industry decides where to spend the money on research and development

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical