Work and energy numbers

Exercise and reference answers

Questions

1. Answer

   1

   Question

   Joules per second in one watt

2. Answer

   1

   Question

   Mechanical advantage of a fixed pulley

3. Answer

   4

   Question

   Times the kinetic energy grows if speed doubles

4. Answer

   3

   Question

   Simple machines studied in this chain

Instructions

Type the number only.

Explanation