A boy accelerates a 10 kg wagon from a velocity of 2 m/s to 4 m/s. How much work does the boy do on the wagon?

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

The metric unit of electrical power is the watt volt ampere ohm

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