a 3.0 kg puck slides due east on a horizontal frictionless surface at a constant speed of 4.5 m/s then a force of magnitude 6.0 N directed due north is applied for 1.5 s afterward, what is the speed of the puck?
Please explain in detail I am getting confused...
possible correct answers:
a: 4.9m/s
b: 5.4m/s
c: 6.2 m/s
d: 7.5 m/s
e: 11m/s