Fact 1: Hitting an object causes the particles in that object to vibrate.

Fact 2: Electrical particles in materials vibrate and accelerate.

Given the two facts above, answer the question "Doing what to an object causes particles in it to accelerate?" with the following options: 
- holding it
 - heating liquids
 - Temperature
 - wanting it
 - heat energy
 - hitting it
 - electricity
 - having it


 

      hitting it   