7. [0/1 Points] DETAILS PREVIOUS ANSWERS MY NOTES An object of mass M is sliding along a horizontal frictionless surface in the +x direction with speed vo when it explodes Into two pieces. The pieces remain in contact with the frictionless surface. After the explosion, one piece with a mass m, = 6.20 kg moves at a speed of Vir = 5.90 m/s at an angle of 10.0 counterclockwise from the positive y axis. The second piece, which has a mass of m2, moves at a speed of v2 = 3.80 m/s at an angle of 33.5 clockwise from the positive x axis. In your written solutions, make sure to sketch the velocities of the object and its pieces before and after explosion. X (a) Calculate the mass of the second piece, mz 49 15.1 X kg (b) Calculate the speed of the object before the explosion. 49 416 x m/s