Acopper sphere was moving at 25 m/s when it hit another object. this caused all of the ke to be converted into thermal energy for the copper sphere. if the specific heat capacity of copper is 387 j/(kg ⋅ c°), what was the increase in temperature? 0.23 c° 0.81 c° 1.3 c° 2.1 c°

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?