While visiting White Sands National Park, you grab a piece of cardboard box and slide down a large sand dune from the top of the dune to the bottom of the dune. Friction is present; air resistance can be ignored. Which statement correctly describes the change in energy as you slide from the top of the dune to the bottom of the dune on the cardboard box?

After the near spacecraft passed mathilde, on several occasions rocket propellant was expelled to adjust the spacecraft's momentum in order to follow a path that would approach the asteroid eros, the final destination for the mission. after getting close to eros, further small adjustments made the momentum just right to give a circular orbit of radius 45 km (45 × 10^3 m) around the asteroid. so much propellant had been used that the final mass of the spacecraft while in circular orbit around eros was only 545 kg. the spacecraft took 1.04 days to make one complete circular orbit around eros. calculate what the mass of eros must be.

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?