Two identical rocks are dropped from different heights. The higher one starts out four times as high as the lower one. How much faster is the higher one going just before they hit?

A biologist is researching antibodies, which are tiny natural proteins in the blood of animals, and she is using methods developed twenty years ago.

What does a negative moment of inertia mean?

Why do atoms move at different speeds depending on weather they are in liquids or solids?

Can a bike move on a frictionless surface?

A plane is flying east at 135 m/s. The wind accelerates it at 2.18 m/s^2 directly northeast. After 18 s, what is the magnitude of the displacement of the plane?

Atoms in a molecule are held together through shared

Why is it not a good idea to stick a metal fork in a plugged in toaster to remove a stuck piece of toast? In your explanation be sure to use the concepts of electrical conduction and voltage.

Two identical rocks are dropped from different heights. The higher one starts out four times as high as the lower one. How much faster is the higher one going just before they hit?

A kid on a playground swing makes 6 complete to-and-from swings each 30 seconds (a) the frequency of the swinging is? (b) the period of the swinging is?

Read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a 100 kg ball traveling at 5 m/s. A 1,000 kg ball traveling at 5 m/s would have kinetic energy.