Recent content by peachpie

ahh, a calculation error... i got it now!

Yes, i found v'B to be <8i, 17j> (which was correct)

got it, thanks! Could you also help me with this one? Two 2.0 kg masses, A and B, collide. The velocities before the collision are vA = 20i + 25j and vB = -15i + 10.0j. After the collision, v'A = -3.0i + 18j. All speeds are given in meters per second. How much kinetic energy was gained or...

A block of mass m1 = 1.8 kg slides along a frictionless table with a speed of 10 m/s. Directly in front of it, and moving in the same direction, is a block of mass m2 = 4.4 kg moving at 2.8 m/s. A massless spring with spring constant k = 1160 N/m is attached to the near side of m2, as shown in...

Thank you, Doc Al! I got my new answers to be v1 = 3.4 m/s, v2=v3 = 8.3 m/s (they were correct).

1. In Fig. 10-41, ball 1 with an initial speed of 12 m/s collides elastically with stationary balls 2 and 3 that are initially in contact with each other. The centers of balls 2 and 3 are on a line perpendicular to the initial velocity of ball 1. The three balls are identical. Ball 1 is aimed...