A package is dropped from a helicopter moving upward at 15 m/s. If it takes 16.0 s before the package strikes the ground, how high above the ground was the package when it was released if air resistance is negligible?
A) 810 m
B) 1000 m
C) 1200 m
D) 1500 m
Question 2
The length of a certain wire is halved while the radius is doubled. What is the change in the resistance of this wire?
A) It stays the same.
B) It is reduced by a factor of 2.
C) It is reduced by a factor of 4.
D) It is reduced by a factor of 8.
E) It is quadrupled.
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