3.10 A l0kg box begins from rest and is pushed to the right by a force of 60N for 8s on a horizontal, friction less floor. After the force is removed, the box collides with a second box of mass M, which is initially at rest, and the two boxes move together a 25m/s. What is the speed of the first box after being pushed for 8 seconds (and before the collision)? What is the mass of the second box?
3.10 A l0kg box begins from rest and is pushed to the right by a force of 60N for 8s on a horizontal, friction less floor. After the force is removed, the box collides with a second box of mass M, which is initially at rest, and the two boxes move together a 25m/s. What is the speed of the first box after being pushed for 8 seconds (and before the collision)? What is the mass of the second box?
发布时间：2025-08-25 07:22:04
