Atennis ball is dropped from 1.13 m above the
ground. it rebounds to a height of 0.876 m.
with what velocity does it hit the ground?
the acceleration of gravity is 9.8 m/s2. (let
down be negative.)
answer in units of m/s.

Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?