A 1-kg chunk of putty moving at 1 m/s collides and sticks to a 5-kg bowling ball that is initially at rest in space. The bowling ball and putty are then set in motion with a speed of
A) 1/4 m/s.
B) 1/5 m/s.
C) 1/6 m/s.
D) none of the above
E) not enough information
Answer: C
You might also like to view...
When a warm air mass moves into a region occupied by a cold air mass, the contact zone is called
A) a cold front. B) a warm front. C) a stationary front. D) an occluded front.
A capacitor in an RC circuit is charged, storing energy 1.25 mJ. What is the time required to discharge this capacitor, as compared to the time required to discharge an identical capacitor in an identical RC circuit which has stored 2.5 mJ?
A. twice the time B. half the time C. the same time D. the answer depends on the values of R and C.
A girl throws a stone straight down from a bridge. The stone leaves her hand with speed of 8.00 m/s at a height of 12 m above the water below. How much time does it take for the stone to hit the water?
A) 2.58 s B) 0.95 s C) 1.8 s D) 0.41 s E) 17.3 s
If the ac peak current through a 100 ohm resistor is 1.7 A, the peak voltage across this resistor is
A) 289 V. B) 110 V. C) 170 V. D) 210 V. E) 120 V.