Suggest a measure that a government can take to reduce a country's energy use

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?