Afamily of trolls communicates with another family at
thebottom of a two-tired cliff as shown. the trolls tie messages
torocks and roll them off the top of the cliff at the minimum
speednecessary to just miss the 2nd cliff and land below.
a. determine the velocity chosen.
b. how far from the bottom of the cliff does the
rockland?

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.