Find the kinetic energy of a block twice as massive (30kg) moving at the same speed (20m/s). (show the equation, show your work and answer with units.)

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

At what time will the interfering waves have an amplitudeof zero?