On a frictionless, horizontal air table, puck A with a mass of 0.25 kg is moving to the right toward puck B with a mass of 0.35 kg, which is
initially at rest. After the collision, puck A has a velocity of 0.12 m/s
to the left, and puck B has a velocity of 0.65 m/s to the right. What
was the speed of puck A before the collision?

Match the atomic particles with their characteristics. 1. made of two protons and two neutrons neutron 2. similar to an electron; positive charge neutrino 3. orbits nucleus; negative charge positron 4. bundle of energy; zero charge proton 5. found in nucleus; positive charge meson 6. very unstable; +, -, or zero charge gamma 7. found in nucleus; zero charge electron 8. negative particle; negative charge beta 9. atomic energy converted to mass alpha

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied.

Alandscaper is shopping for landscaping materials. she wants to use materials through which water flows easily. which materials should she choose? check all that apply. clay gravel granite rocks with cracks loosely packed soil