working on a study guide for physics.Wanting assistance checking of these solutions are correct or not. And if not the correct answer with brief...

working on a study guide for physics.Wanting assistance checking of these solutions are correct or not. And if not the correct answer with brief explanation for further understanding . thanks!

A rock is thrown straight up from the surface of the Earth. Which one of the following statements describes the energy transformation of the rock as it rises? Neglect air resistance.

               The kinetic energy increases and the potential energy decreases.

               The kinetic energy decreases and the potential energy increases.

               The total energy of the rock increases.

Clocks on a spaceship moving very fast relative to the Earth run more slowly when viewed from

            both, the spaceship as well as the Earth

               the spaceship

               the Earth

The work done on a 100-kg crate that is hoisted 2m in a time of 4s is (assume acceleration due to gravity for the Earth, g = 10 m/s2)

               2000J

               200 J

               800 J

               500 J

A bullet fired horizontally from a rifle begins to fall

               sooner or later depending on the initial speed

               as soon as it leaves the barrel.

               after air friction reduces its speed.

Do action and reaction forces act on the same object?

               Yes

               No

         Or depends on the situation?

A stone is thrown horizontally from the top of a cliff (assume no air-resistance and that acceleration due to gravity, g = 10m/s2) . One second after it has left your hand, its vertical distance below the top of the cliff is

            15 m

               insufficient information

               5 m

               10 m

The highest ocean tides occur when the Earth and Moon are

               lined up with the Sun

               at right angles to the Sun

               are lined up and it has nothing to do with the Sun since it is far away

If a heavy and a light object are dropped simultaneously from a tall tower which one will hit the ground first? Neglect the effect of air-resistance

               heavy object

               light object

               both hit the ground at the same time

A tightrope walker more easily balances on a tight wire if his pole

               is short

               is long and it droops

               is held high

The rotational inertia of an object is greater when most of the mass is located

               away from the axis of rotation

               near the axis of rotation

               at the axis of rotation