A block of mass m = 4.4 kg, moving on frictionless surface

Last updated: 7/30/2022

A block of mass m = 4.4 kg, moving on frictionless surface with a speed ₁-9.2 m/s, makes a sudden perfectly elastic collision with a second block of mass M, as shown in the figure. The second block is originally at rest. Just after the collision, the 4.4-kg block recoils with a speed of of=2.5 m/s. What is the mass M of the second block? 7.7 kg 0 kg 0 kg 0 kg 0 kg