A clay blob of mass m1, initially at rest, is pushed across a frictionless surface with constant force F for a distance d. It then hits and sticks to a second clay blob of mass m2 that is at rest. Find an expression for their speed after the collision.

Solution 35

Step 1 of 3</p>

We are required to find an expression for their speed after the collision

Step 2 of 3</p>

From Newton’s second law

The acceleration of the bob is

From equation of motion

Initial clay bob at rest so