A hockey puck moves 18 meters southward, then 12 meters northward, and finally 8 meters southward. What is the magnitude, and direction of displacement?

How are calculation for velocity and speed different

Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20

The least penetrating form of radiation is