A train accelerates from rest until it reaches a top speed of 35 m/s. If it travels 800 m in this time, calculate its acceleration A. 0.4 m/s2
B. 5 m/s2
C. 1.54 m/s2
D. 2 m/s2

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?