# PHY110A Online_Lab7_Linear Momentum Lab.doc - Lab 7 Linear...

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Lab 7- Linear Momentum, Impulse, and Newton’s Laws Lab Given: The momentum (p) in kg-m/s of an object is defined as the product of its mass (m) in kg times its velocity (v) in m/s as follows: p = mv In terms of momentum, Newton’s 2 nd Law (F = ma) can be written as follows: F = p t That is, the rate of change of momentum equals the net applied force. The law of conservation of momentum states that the total momentum of an isolated system of objects remains constant. An isolated system is one on which the net external force is zero. The law of conservation of momentum is very useful in dealing with collisions. In a collision, two (or more) objects interact with each other over a very short time interval, and the forces between them during this interval are very large. The impulse of a force on an object is defined as F t in Ns, where F is the average force in Newtons acting during the (usually short) time interval t in seconds. The impulse is equal to the change in momentum of the object, which yields: Impulse = F t = m v = p = change in momentum Data: (Do this part outside of your house) 1. Throw the egg into the back of the sheet as instructed on attached pages .