Physics, 21.05.2021 05:40, anniebear

A block of mass m = 3.7 kg slides from left to right across a frictionless surface withra speed v; - 7.4 m/s. It collides in a perfectly elastic collision with a second block of mass M that is at rest. After the collision, the 3.7-kg block reverses direction, and its new speed is vf 2.2 m/s. What is M?

8.9 kg
6.8 kg
5.2 kg
7.5 kg

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A block of mass m = 3.7 kg slides from left to right across a frictionless surface withra speed v; -...