A 170. pound halfback is tackled by a 245. pound guard. Each, of course, exerts a force on the other. Which of the players exerts the LARGER force on the other?
What will be an ideal response?
neither (Newton's 3rd Law)
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Graphical Interpretation of Work: A force acts on an object, causing it to move parallel to the force. The graph in the figure shows this force as a function of the position of the object. How much work does the force do as the object moves from 0 to 15 m?
A. 25 J B. 50 J C. 100 J D. 125 J E. 150 J
A sound wave in air has an intensity of
The density of air is
and the velocity of sound in air is 331 m/s. The pressure amplitude of the sound wave is
A. 
B. 
C. 
D. 
E. 
Which has the greater kinetic energy?
A) a car traveling at 30 km/h B) a car of half the mass traveling at 60 km/h C) both the same D) need more information
When Mary is 3.00 m from the center of a merry-go-round, her tangential speed is a constant 1.88 m/s
(a) What is her angular speed in rad/s? (b) What is the magnitude of her linear acceleration? What will be an ideal response?