When a roller coaster gets to the bottom of a descent, describe the energy transfers and changes to energy stores that happen if: a. the brakes are applied to stop it b. it goes up and over a second hill.​

In the first law of thermodynamics, triangle e=q-w, what does q stand for

If there's a small amount of friction between two surfaces, the result could be select all that applya. no movement b. heatc. a little bit of movementd. sliding around

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. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?