A pool ball rolling at 10m/s[w] strikes a cushion and then rebounds at a velocity of 10m/s[s]. what is the change in velocity of the pool ball?

Cooling down after a workout allows the oxygen to continuing moving through the body and keeps the muscles from tightening up to fast

Why energy must be added to a solid to cause it to melt.

0.5 kg of blood flows from the interior to the surface of John's body while he is exercising. The released energy is 2,000 J. The specific heat capacity of blood is 4,186 J/kgo C.

An object with a mass of 7.8 kg is pulled on a horizontal surface by a horizontal pull of 50 N to the right. The friction force on this object is 30 N to the left. What is the acceleration of the object? 0.16 m/s^2 10 m/s^2 2.6 m/s^2 6.4 m/s^2

What is a force exerted over a distance to move an object

What is the term for the depth of the water needed to float a boat clear of the bottom?

Rigel has an apparent magnitude of 0.18 and betelgeuse an apparent magnitude of 0.45. what can you conclude from this?

When water vapor is cooled it three forms into water droplets why does this represent a conservation in mass

If you go outside on a hot summer day with a double scoop ice cream cone, how will the cold ice cream interact with the hot outside air?

What would happen if an electron was added to an atom