two ice skaters push each other, and move in opposite directions. the mass of one is 75 kg, and his speed is 2 m/s. if the mass of the other is 30 kg, what is her speed?

If a cat always lands on its feet, and buttered bread always lands butter side down, what would happen if you tied buttered bread on top of a cat?

Oceans form as a result of

Imagine you are digging a hole to the center of the earth. In which order would dig through them? A. inner core, outer core, upper mantle, lower mantle, crust B. crust, upper mantle, lower mantle, outer core, inner core C.

Find the magnitude of the gravitational force a 63.5 kg person would experience while standing on the surface of Earth with a mass of 5.98 * 1024 kg and a radius of 6.37 * 106 m. The universal gravitational constant is 6.673 * 10-11 N · m2 / kg2.

Humans consume resources and produce waste. As the human population grows, global consumption of resources and waste production increases. The waste generated often collects in dumping grounds called landfills.

During a snowball fight two balls with masses of 0.4 kg and 0.6 kg, respectively, are thrown in such a manner that they meet head on and combine to form a single mass of 1 kg. the magnitude of intial velocity foreach is 15 m/s.

Which phases of matter do molecules have the lowest amount of energy?

How many Oxygen (O) atoms are in the following? H2O + CO2 4 3 2

How does surface roughness affect friction

Why does it hurt your hands when you carry heavy shopping in carrier bags?