An object is dropped from rest on the planet Jupiter. At the end of 1 second, it has fallen 8 m and is moving at 16 m/s. What was its average speed during the entire first second [i.e., from t=0 until t=1 sec]?
A) 4 m/s
B) 16 m/s
C) 8 m/s
D) 12 m/s
E) None of the above.
C
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For small angle approximations
a. the angle must be 10° or less b. the angle must be 10 radians or less c. the angle must be 1° or less d. the angle must be 1 radian or less e. the angle must be 45° or less
A 1.10 kg hollow steel ball is submerged in water. It weighs in water 8.75 N. The volume of the cavity inside the ball is (density of steel is
A. 0.000168
B. 0.000276
C. 0.000305
D. 0.000567
E. 0.000667
Ice tends to form first at the
A) surface of bodies of water. B) bottom of bodies of water. C) either depending on water depth.
One of the primary motivating forces behind our per capita reduction in energy use in the 1980's was _____________
a. a smaller population growth b. higher oil prices c. increased nuclear power costs d. increased domestic oil discoveries