A 3.00-kg stone is dropped from a 39.2 m high building. When the stone has fallen 19.6 m, the magnitude of the impulse it has received from the gravitational force is
a. 9.80 Ns.
b. 19.6 Ns.
c. 29.4 Ns.
d. 58.8 Ns.
e. 118 Ns.
D
Physics & Space Science
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A) .08 solar masses. B) .4 solar masses. C) 1.4 solar masses. D) 3 solar masses. E) 8 solar masses.
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The occasional backward motion of the planets against the background of fixed stars is called _____
A) anterograde motion B) rotation C) oscillation D) retrograde motion
Physics & Space Science
What are some of the things that make Earth unique in the solar system?
What will be an ideal response?
Physics & Space Science
Jill is farsighted and cannot see objects clearly that are closer to the eye than 80.0 cm. What is the focal length of the contact lenses that will enable her to see objects at a distance of 25.0 cm from her eyes?
A) +36.4 cm B) -36.4 cm C) -21.2 cm D) +21.2 cm E) +32.5 cm
Physics & Space Science