1 A) 9.75×102 N B) 1.46×104 N C) 9.75×103 N D) 975 kg·m/s 2 A) product of the mass and velocity of a moving object B) quantity of motion used with objects rotating about a fixed axis C) average force and the time interval over which it acts D) angular momentum and torque 3 A) angular momentum B) torque C) uniform circular motion D) centripetal acceleration 4 A) 6.3 m/s B) 3.2 m/s C) 1.2 m/s D) 4.33 m/s 5 A) impulse B) velocity C) acceleration D) linear momentum 6 A) 85 kg·m/s2 B) 124 kg·m/s2 C) 104 kg·m/s D) 124 kg·m/s 7 A) the impulse on an object is equal to the change in momentum it causes B) the force on a moving object is equal to the magnitude of the impulse C) the impulse on an object is greater than the change in momentum it causes D) the impulse on an object is less than the change in momentum it causes 8 A) 18.8 min B) 9.4 min C) 22 min D) 11 min 9 A) linear momentum B) impulse C) net force D) normal force 10 A) -7.2×103 N B) 7.2×103 N C) -2.5×104 N D) 2.5×104 N 11 In which position does the diver have the smallest moment of inertia?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617917/lu.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (6.0K)</a>]]> A) The first B) The second C) The fourth D) The last 12 1 kg person's speed from 40.0 m/s to 0.0 m/s, what impulse must act on the person?A) You cannot solve this problem without knowing the time it takes to stop the person. B) 2400 kg m/s C) 1.5 kg m/s D) 0.67 kg m/s 13 A) F t = mΔv B) p mv C) F ma D) g F m 14 A) 1.46×104 kg[dot]m/s B) 9.75×102 kg[dot]m/s C) 2.19×105 kg[dot]m/s D) 7.22×104 kg[dot]m/s 15 In Figure 9-4b, in which position does the diver have the largest moment of inertia?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617917/lu.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (6.0K)</a>]]> A) The second B) The third C) The fourth D) The last 16 A) average force and the time interval over which it acts B) mass and velocity of a moving object C) average force and the distance the object travels D) angular momentum and torque 17 FΔt = mΔv is the equation for __________.A) impulse-momentum B) linear momentum C) angular momentum D) net force 18 4 kg collide. One was initially moving at 3.7 m/s; the other was at rest. They stick together. What is their final speed?A) 1.9 m/s B) 3.7 m/s C) 0.54 m/s D) 2.4 m/s 19 A) -1.5×102 kg·m/s B) -4.5 kg·m/s C) 1.5×102 kg·m/s D) 4.5 kg·m/s 20 A) 8.66 m/s B) 2.50 m/s C) 4.33 m/s D) 6.83 m/s 21 A) 8.25 m/s B) 1.7 m/s C) 4.0 m/s D) 5.3 m/s 22 A) 2.50 m/s B) 5.00 m/s C) 6.83 m/s D) 8.66 m/s 23 A) external forces B) angular forces C) internal forces D) due to gravity 24 A) -7.0×102 kg·m/s B) 7.0×101 kg·m/s C) -7.0×101 kg·m/s D) -2.8×102 kg·m/s 25 In the figure below, if v C is 1 m/s, v D is 7 m/s, and the mass of each ball is 2 kg, how would the magnitudes of the forces exerted by each ball on the other during the collision compare?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617917/lv.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (12.0K)</a>]]> A) The magnitude of the force of C on D would be greater than the magnitude of the force of D on C. B) The magnitude of the force of D on C would be greater than the magnitude of the force of C on D. C) The magnitudes of the forces would be equal. D) They do not exert forces on each other. 26 A) -0.57 kg·m/s B) 1.20×103 kg·m/s C) 5.7 kg·m/s D) -1.20×103 kg·m/s 27 A) non-accelerating B) an isolated system C) motionless D) a normal system 28 A) inert B) a closed system C) isolated D) an internal system 29 A) momentum is neither created nor destroyed B) the momentum of any closed system does not change C) the momentum of any system does not change D) the momentum of any closed system with no net external force does not change 30 In the figure below, 9-6, if m C is 1 kg, m D is100 kg, and the initial velocities of both balls are 5 m/s, how would the magnitudes of the forces exerted by each ball on the other during the collision compare?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617917/lv.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (12.0K)</a>]]> A) The magnitude of the force of D on C would be greater than the magnitude of the force of C on D. B) The magnitude of the force of C on D would be greater than the magnitude of the force of D on C. C) The magnitudes of the forces would be equal. D) They do not exert forces on each other.
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