3
m
M
m
M
before
after
A block of mass m= 5. 9 kg slides from left to right across a frictionless surface with a speed Vi= 8. 3 m/s. It collides with a block of mass Mthat is at rest. After the
collision, the 5. 9-kg block reverses direction, and its new speed is vf=2. 5 m/s. The block of mass M travels to the right at a speed 7 of 3. 8 m/s. What is M?
O 7. 9 kg
O 23 kg
O 12 kg
O 17 kg
O 9. 3 kg
