An 80 kg water skier is being pulled by a speedboat. The force causes her to accelerate at 5 m/s2. calculate the net force that causes the acceleration. (don't forget the unit of measurement)

What is the length x of the side of the triangle below? (hint: use the cosine function)

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material