A 4.0-kg mass is placed at (3.0, 4.0) m, and a 7.0-kg mass is placed at (3.0, -4.0) m. What is the moment of inertia of this system of masses about the y axis?
a. 275 kg•m2
c. 176 kg•m2
b. 90 kg•m2
d. 99 kg•m2
D
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A negative velocity, approaching zero, represents a negative acceleration
Indicate whether the statement is true or false
A ball rolls over the edge of a table with a horizontal velocity v m/s. The height of the table is 1.6 m and the horizontal range of the ball from the base of the table is 20 m
What is the horizontal velocity of the ball just before it touches the ground? A) 35 m/s B) 9.8 m/s C) 20 m/s D) 4.9 m/s E) 70 m/s
at point b? 
A. ?0 I/4?R B. ?0 I/2?R C. ?0 I/?R D. ?0 I/R E. (2 + ?)?0 I/4?R F. Zero
A 0.5-kg blob of clay moving at 2.0 m/s slams into a 4.0-kg blob of clay at rest. The speed of the two blobs stuck together after colliding is about
A) 1.1 m/s. B) 1.5 m/s. C) 2.5 m/s. D) none of the above