Physics Principles and Problems 2009

Section 9.1 : Impulse and Momentum

Self-Check Quizzes

1
_____ is the product of the average force on an object and the time interval over which it acts.
A)Angular momentum
B)Impulse
C)Impulse momentum
D)Momentum
2
An object's _____ is equal to the product of the object's moment of inertia and the object's angular velocity.
A)angular momentum
B)inertia
C)impulse
D)momentum
3
Which is represented by the equation FΔt = pf - pi
A)angular momentum
B)angular impulse-anglular momentum theorem
C)impulse theorem
D)impulse-momentum theorem
4
How does an air bag save lives?
A)It reduces the surface area that a person's body strikes.
B)It reduces the force by increasing the time interval during which it acts.
C)It exerts the force over a smaller area of the person's body.
D)It reduces the force by decreasing the time interval during which it acts.
5
According to the graph, at which time is the force on a baseball the highest?

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A)– 1.5
B)– 1.0
C)0.0
D)1.5
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