What is the momentum of a 100 kilogram boulder rolling south down a a hill at a velocity at 5 meters per second?

According to Newton's third law, is he total momentum the same after two football players collide?

At 25oC, 3 M of a gas occupy a volume of 4.0 L at 1.9 kPa. If the volume decreases to 2.0 L, what will the new pressure be?

Is it a good thing for people to live on Mars?

Why does mercury lack seasons?

If an atom has 17 electrons and its mass is 35, calculate the following: # of protons, atomic numbers and number of neutrons ...

Why can radio telescopes be used 24 hours a day?

How do you find mass, volume and density? Any formulas?

Explain the difference between texture and composition.

Marie and Calvin dissolved 10 grams of KNO3 in 100 grams of water at 25oC. Next they added 5 grams more.

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. It strikes a red glider that has mass 0.600 kg and that is initially at rest.