A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 1.9 m/s what is the initial height of the bob?

The Earth is massive compared to most Earth-based objects, making acceleration due to Earth’s gravity approximately 9.8 m/s2. Using the equation, F = m X a and the value of 10 m/s2 for the acceleration of gravity, what is the force acting upon a 70 kg person?

On vacation in Pensacola a tourist floats lazily in the ocean with 85% of his body below the surface. The density of the ocean water is 1035 kg/m3. What is the tourist average density?

I having hard time figuring this out. You are on a cruise ship traveling north at a speed of 15 m/s with respect to land. 3)Your friend is sitting on another cruise ship traveling south at 12 m/s. As you walk toward the back of your ship at 1.8 m/s, what is your velocity with respect to your...