1.An eagle is flying due east at 8.9m/s carrying a gopher in its talons.The gopher manages to break free at a height of 12m.What is the magnitude of the gopher's velocity as it reaches the ground?Note:effects of air resistance are not included in thi

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1.An eagle is flying due east at 8.9m/s carrying a gopher in its talons.The gopher manages to break free at a height of 12m.What is the magnitude of the gopher's velocity as it reaches the ground?Note:effects of air resistance are not included in thi
1.An eagle is flying due east at 8.9m/s carrying a gopher in its talons.The gopher manages to break free at a height of 12m.What is the magnitude of the gopher's velocity as it reaches the ground?Note:effects of air resistance are not included in this calculation.
a)22m/d
b)18m/s
c)11m/s
d)9.8m/s
e)8.9m/s
2.The coordinate of a particle in meters is given by x(t)=16t-3.0t^3,where the time t is in seconds.The particle is momentarily at rest at t=
a)0.75s
b)1.3s
c)5.3s
d)7.3s
b)9.3s

1.An eagle is flying due east at 8.9m/s carrying a gopher in its talons.The gopher manages to break free at a height of 12m.What is the magnitude of the gopher's velocity as it reaches the ground?Note:effects of air resistance are not included in thi
1:ABCDE 任选一题
2:ABCDE 任选一题
是这样吗 LZ?