Solve this A frictionless wagon going at 2.5 meters per second is pushed with a force of 380 N, and its speed increases to 6.2 meters per second in 4.0 seconds. What is its mass - (a) 410 kg (b) 420 kg (c) 480 kg (d) 310 kg Share with your friends Share 5 Sanjay Singh answered this Dear student Regards -5 View Full Answer