Two hockey players strike a puck of mass 0.159 kg with their sticks simultaneously, exerting forces of 1.30 103 N, directed west, and 9.90 102 N, directed 30.0° east of north. Find the instantaneous acceleration of the puck.

Answer 1

1.30*10^3 @ W = (-1300,0)
9.90*10^2 @ N30E = (445,857)
add the forces to get (-855,857) = 1211 @ N45W

Since F=ma, a = 1211/.159 = 7613 m/s^2 in that direction