30 100N 32. A 100-newton weight is suspended by two cords as shown in the figure above. The tension in the slanted cord is (A) 50 N (B) 100 N (C) 150 N (D) 200 N (E) 250 N
30 100N 32. A 100-newton weight is suspended by two cords as shown in the figure above. The tension in the slanted cord is (A) 50 N (B) 100 N (C) 150 N (D) 200 N (E) 250 N
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Transcribed Image Text:33. If a particle moves in such a way that its
position x is described as a function of time r
by x 1, then its kinetic energy is propor-
30°
tional to
100N
(A) 2
32. A 100-newton weight is suspended by two cords
as shown in the figure above. The tension in the
slanted cord is
(B)
(C)
(A) 50 N
(B) 100 N
(C) 150 N
(D) 200 N
(E) 250 N
(D) t
(E) (i.e., kinetic energy is constant)
34. From the top of a 70-meter-high building, a
1-kilogram ball is thrown directly downward
with an initial speed of 10 meters per second. If
the ball reaches the ground with a speed of 30
meters per second, the energy lost to friction is
most nearly
(A)
0J
(B) 100 J
(C) 300 J
(D) 400 J
(E) 700 J
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