Homework Statement
A standing archer can fire an arrow from a bow with a maximum speed of 40.0 m/s. The archer rides a horse that can run at 12.0 m/s. The archer shoots an arrow at the maximum speed while riding the horse in the direction the horse is running and 10 degrees above horizontal...
Homework Statement
Newton's cradle. Each ball is 50 g. First ball is raised to 3.0 cm, and the final ball reaches 2.6 cm after the collision.
1) Use the law of conservation of energy to calculate its velocity before impact.
2) Use the law of conservation of momentum to determine the velocity of...