Projectile Motion: A pilot drops a package from a plane flying horizontally at a constant speed. Neglecting air resistance, when the package hits the ground the horizontal location of the plane will

A. be behind the package.
B. be directly over the package.
C. be in front of the package.
D. depend on the speed of the plane when the package was released.


Answer: B

Physics & Space Science

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Proportional Reasoning: A car moving initially with speed v0 slows down with an acceleration of magnitude a and comes to a full stop after traveling a distance d. What was the speed of the car when it had traveled half that distance, d/2?

A. v0/2
B. v0/4
C. v0/
D. v0/8

Physics & Space Science

Halley's comet has an orbital period of 76 years, what is the average distance of Comet Halley from the Sun?

a. 51 AU b. 18 AU c. 114 AU d. 660 AU e. 38 AU

Physics & Space Science

When only part of the Moon is covered by Earth's full shadow (umbra), we see a(n)

A) total lunar eclipse. B) penumbral lunar eclipse. C) partial lunar eclipse. D) partial solar eclipse. E) annular eclipse.

Physics & Space Science

Radio telescopes have poor resolving power because

a. their diameters are so large. b. the energy they receive is not electromagnetic radiation. c. radio waves have long wavelengths. d. their diameters are so large and the energy they receive is not electromagnetic radiation. e. None of the other choices are correct.

Physics & Space Science