iPad令 5:37 AM 98%– 卬 www2.vernier.com Computer 38 Momentum: A Crash Lesson An object’s momentum depends on both its mass and its velocity. Momentum can be expressed by the formula P=mv where P = momentum (in g·m/s), m = mass (in g), and v = velocity (in m/s). Momentum is an important factor in analyzing collisions, especially those of automobiles. In this experiment, you will study the relationship between a car’s momentum and the distance it pushes an object during a collision. You will use a balance or spring scale to measure the car’s mass (m) and a computer- interfaced Motion Detector to measure its velocity (v). You will then caleulate momentum (p) g the formula given above. usin OBJECTIVES In this experiment, you will Use a computer to measure velocity . Measure mass. .Calculate momentum. Graph data. . Make conclusions about momentum MATERIALS Vermier computer interface Venier Motion Detector Logger Pro 15 m ramp books to support a ramp meter stick balance or spring ruler masking tape car with card attached 3-ring notebook scale CG Figure I Physical Science with Vernier 38-1