The atomic number of a nucleus increases during which nuclear reactions? A. Nuclear fission and beta decay (positron emission)
B. Nuclear fusion and alpha decay
c. Nuclear fusion and beta decay (electron emission)
D. Nuclear fission and alpha decay

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?